diff --git a/CHANGELOG.md b/CHANGELOG.md
index ea83ada..9f7c153 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # CHANGELOG
 
+- Fix Dropbox adapter not working
+
 ## 1.0.0-rc1
 
 - added `streamReads` param for AWS
diff --git a/composer.json b/composer.json
index 11aed02..dd6c4fd 100644
--- a/composer.json
+++ b/composer.json
@@ -33,7 +33,6 @@
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-        "league/flysystem-copy": "~1.0",
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         "league/flysystem-gridfs": "~1.0",
         "league/flysystem-rackspace": "~1.0",
@@ -47,8 +46,8 @@
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-            "url": "http://pear.php.net"
+            "type": "composer",
+            "url": "https://asset-packagist.org"
         }
     ],
     "autoload": {
diff --git a/composer.lock b/composer.lock
index 018e05a..fb1ce0a 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,87 +1,48 @@
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-        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
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-                "browser",
-                "javascript",
-                "jquery",
-                "library"
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-                    "!dist/min/inputmask/*",
-                    "!extra/bindings/*",
-                    "!extra/dependencyLibs/*",
-                    "!extra/phone-codes/*"
-                ]
+                "url": "https://api.github.com/repos/jquery/jquery-dist/zipball/e786e3d9707ffd9b0dd330ca135b66344dcef85a",
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-            "description": "jquery.inputmask is a jquery plugin which create an input mask.",
-            "keywords": [
-                "form",
-                "input",
-                "inputmask",
-                "jquery",
-                "mask",
-                "plugins"
+                "MIT"
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@@ -89,74 +50,49 @@
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-                "url": "https://github.com/bestiejs/punycode.js.git",
+                "url": "git@github.com:bestiejs/punycode.js.git",
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+            "type": "bower-asset"
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-                    "script/",
-                    "test/"
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+            "version": "1.2.1",
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-                "reference": "54a2c49de31cc44e864ebf0500a35ef21d0010b2"
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@@ -174,7 +110,7 @@
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@@ -203,25 +139,32 @@
                 "markdown",
                 "markdown-extra"
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-            "time": "2015-03-06 05:28:07"
+            "support": {
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-            "version": "v4.6.0",
+            "version": "v4.13.0",
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-                "reference": "6f389f0f25b90d0b495308efcfa073981177f0fd"
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+            },
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@@ -229,11 +172,14 @@
                 },
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+                ],
+                "exclude-from-classmap": [
+                    "/library/HTMLPurifier/Language/"
                 ]
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             "notification-url": "https://packagist.org/downloads/",
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-                "LGPL"
+                "LGPL-2.1-or-later"
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@@ -247,48 +193,52 @@
             "keywords": [
                 "html"
             ],
-            "time": "2013-11-30 08:25:19"
+            "support": {
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+                "source": "https://github.com/ezyang/htmlpurifier/tree/master"
+            },
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             "name": "league/flysystem",
-            "version": "1.0.16",
+            "version": "1.1.5",
             "source": {
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                 "url": "https://github.com/thephpleague/flysystem.git",
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+                "ext-fileinfo": "*",
+                "league/mime-type-detection": "^1.3",
+                "php": "^7.2.5 || ^8.0"
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-                "phpspec/prophecy-phpunit": "~1.0",
-                "phpunit/phpunit": "~4.8"
+                "phpspec/prophecy": "^1.11.1",
+                "phpunit/phpunit": "^8.5.8"
             },
             "suggest": {
-                "ext-fileinfo": "Required for MimeType",
+                "ext-ftp": "Allows you to use FTP server storage",
+                "ext-openssl": "Allows you to use FTPS server storage",
                 "league/flysystem-aws-s3-v2": "Allows you to use S3 storage with AWS SDK v2",
                 "league/flysystem-aws-s3-v3": "Allows you to use S3 storage with AWS SDK v3",
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-                "league/flysystem-copy": "Allows you to use Copy.com storage",
-                "league/flysystem-dropbox": "Allows you to use Dropbox storage",
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                 "league/flysystem-webdav": "Allows you to use WebDAV storage",
-                "league/flysystem-ziparchive": "Allows you to use ZipArchive adapter"
+                "league/flysystem-ziparchive": "Allows you to use ZipArchive adapter",
+                "spatie/flysystem-dropbox": "Allows you to use Dropbox storage",
+                "srmklive/flysystem-dropbox-v2": "Allows you to use Dropbox storage for PHP 5 applications"
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@@ -331,32 +281,149 @@
                 "sftp",
                 "storage"
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-            "time": "2015-12-19 20:16:43"
+            "support": {
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+                "source": "https://github.com/thephpleague/flysystem/tree/1.1.5"
+            },
+            "funding": [
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+            ],
+            "time": "2021-08-17T13:49:42+00:00"
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+            "version": "1.8.0",
+            "source": {
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+                "url": "https://github.com/thephpleague/mime-type-detection.git",
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+            ],
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+            "support": {
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+                "issues": "https://github.com/paragonie/random_compat/issues",
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-                "ezyang/htmlpurifier": "4.6.*",
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@@ -382,13 +449,13 @@
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                     "name": "Qiang Xue",
                     "email": "qiang.xue@gmail.com",
-                    "homepage": "http://www.yiiframework.com/",
+                    "homepage": "https://www.yiiframework.com/",
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-                    "homepage": "http://rmcreative.ru/",
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@@ -399,7 +466,7 @@
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@@ -417,32 +484,63 @@
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                     "email": "d.naumenko.a@gmail.com",
                     "role": "Core framework development"
+                },
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+                    "name": "Boudewijn Vahrmeijer",
+                    "email": "info@dynasource.eu",
+                    "homepage": "http://dynasource.eu",
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-            "homepage": "http://www.yiiframework.com/",
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@@ -464,6 +562,10 @@
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                     "email": "qiang.xue@gmail.com"
+                },
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@@ -472,29 +574,104 @@
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@@ -554,121 +733,80 @@
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@@ -763,45 +901,55 @@
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@@ -825,32 +973,36 @@
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@@ -866,46 +1018,84 @@
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                 "promise"
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+            "support": {
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@@ -921,38 +1111,85 @@
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@@ -1310,37 +1472,36 @@
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+                "source": "https://github.com/Azure/azure-storage-php/tree/v0.10.2"
+            },
+            "abandoned": "microsoft/azure-storage-blob;microsoft/azure-storage-queue;microsoft/azure-storage-table;microsoft/azure-storage-file",
+            "time": "2016-08-19T08:32:57+00:00"
         },
         {
             "name": "mikemccabe/json-patch-php",
@@ -1520,27 +1714,33 @@
                 "LGPL-3.0"
             ],
             "description": "Produce and apply json-patch objects",
-            "time": "2015-01-05 21:19:54"
+            "support": {
+                "issues": "https://github.com/mikemccabe/json-patch-php/issues",
+                "source": "https://github.com/mikemccabe/json-patch-php/tree/master"
+            },
+            "time": "2015-01-05T21:19:54+00:00"
         },
         {
             "name": "mtdowling/jmespath.php",
-            "version": "2.3.0",
+            "version": "2.6.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/jmespath/jmespath.php.git",
-                "reference": "192f93e43c2c97acde7694993ab171b3de284093"
+                "reference": "9b87907a81b87bc76d19a7fb2d61e61486ee9edb"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/jmespath/jmespath.php/zipball/192f93e43c2c97acde7694993ab171b3de284093",
-                "reference": "192f93e43c2c97acde7694993ab171b3de284093",
+                "url": "https://api.github.com/repos/jmespath/jmespath.php/zipball/9b87907a81b87bc76d19a7fb2d61e61486ee9edb",
+                "reference": "9b87907a81b87bc76d19a7fb2d61e61486ee9edb",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.4.0"
+                "php": "^5.4 || ^7.0 || ^8.0",
+                "symfony/polyfill-mbstring": "^1.17"
             },
             "require-dev": {
-                "phpunit/phpunit": "~4.0"
+                "composer/xdebug-handler": "^1.4 || ^2.0",
+                "phpunit/phpunit": "^4.8.36 || ^7.5.15"
             },
             "bin": [
                 "bin/jp.php"
@@ -1548,7 +1748,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "2.0-dev"
+                    "dev-master": "2.6-dev"
                 }
             },
             "autoload": {
@@ -1575,321 +1775,52 @@
                 "json",
                 "jsonpath"
             ],
-            "time": "2016-01-05 18:25:05"
-        },
-        {
-            "name": "pear-pear.php.net/Archive_Tar",
-            "version": "1.4.0",
-            "dist": {
-                "type": "file",
-                "url": "http://pear.php.net/get/Archive_Tar-1.4.0.tgz",
-                "reference": null,
-                "shasum": null
-            },
-            "require": {
-                "php": ">=5.2.0.0"
-            },
-            "replace": {
-                "pear-pear/archive_tar": "== 1.4.0.0"
-            },
-            "type": "pear-library",
-            "autoload": {
-                "classmap": [
-                    ""
-                ]
-            },
-            "include-path": [
-                "/"
-            ],
-            "license": [
-                "New BSD License"
-            ],
-            "description": "This class provides handling of tar files in PHP.\nIt supports creating, listing, extracting and adding to tar files.\nGzip support is available if PHP has the zlib extension built-in or\nloaded. Bz2 compression is also supported with the bz2 extension loaded."
-        },
-        {
-            "name": "pear-pear.php.net/Console_Getopt",
-            "version": "1.4.1",
-            "dist": {
-                "type": "file",
-                "url": "http://pear.php.net/get/Console_Getopt-1.4.1.tgz",
-                "reference": null,
-                "shasum": null
-            },
-            "require": {
-                "php": ">=5.4.0.0"
-            },
-            "replace": {
-                "pear-pear/console_getopt": "== 1.4.1.0"
-            },
-            "type": "pear-library",
-            "autoload": {
-                "classmap": [
-                    ""
-                ]
+            "support": {
+                "issues": "https://github.com/jmespath/jmespath.php/issues",
+                "source": "https://github.com/jmespath/jmespath.php/tree/2.6.1"
             },
-            "include-path": [
-                "/"
-            ],
-            "license": [
-                "BSD-2-Clause"
-            ],
-            "description": "This is a PHP implementation of \"getopt\" supporting both\nshort and long options."
+            "time": "2021-06-14T00:11:39+00:00"
         },
         {
-            "name": "pear-pear.php.net/HTTP_Request2",
-            "version": "2.3.0",
-            "dist": {
-                "type": "file",
-                "url": "http://pear.php.net/get/HTTP_Request2-2.3.0.tgz",
-                "reference": null,
-                "shasum": null
-            },
-            "require": {
-                "pear-pear.php.net/net_url2": ">=2.2.0.0",
-                "pear-pear.php.net/pear": ">=1.9.2.0",
-                "php": ">=5.2.0.0"
-            },
-            "replace": {
-                "pear-pear/http_request2": "== 2.3.0.0"
-            },
-            "type": "pear-library",
-            "autoload": {
-                "classmap": [
-                    ""
-                ]
+            "name": "phpseclib/phpseclib",
+            "version": "2.0.34",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/phpseclib/phpseclib.git",
+                "reference": "98a6fe587f3481aea319eef7e656d02cfe1675ec"
             },
-            "include-path": [
-                "/"
-            ],
-            "license": [
-                "BSD 3-Clause License"
-            ],
-            "description": "PHP5 rewrite of HTTP_Request package (with parts of HTTP_Client). Provides\ncleaner API and pluggable Adapters:\n  * Socket adapter, based on old HTTP_Request code,\n  * Curl adapter, wraps around PHP's cURL extension,\n  * Mock adapter, to use for testing packages dependent on HTTP_Request2.\nSupports POST requests with data and file uploads, basic and digest\nauthentication, cookies, managing cookies across requests, proxies, gzip and\ndeflate encodings, redirects, monitoring the request progress with Observers..."
-        },
-        {
-            "name": "pear-pear.php.net/Mail_Mime",
-            "version": "1.10.0",
             "dist": {
-                "type": "file",
-                "url": "http://pear.php.net/get/Mail_Mime-1.10.0.tgz",
-                "reference": null,
-                "shasum": null
+                "type": "zip",
+                "url": "https://api.github.com/repos/phpseclib/phpseclib/zipball/98a6fe587f3481aea319eef7e656d02cfe1675ec",
+                "reference": "98a6fe587f3481aea319eef7e656d02cfe1675ec",
+                "shasum": ""
             },
             "require": {
-                "php": ">=5.0.0.0"
-            },
-            "replace": {
-                "pear-pear/mail_mime": "== 1.10.0.0"
-            },
-            "type": "pear-library",
-            "autoload": {
-                "classmap": [
-                    ""
-                ]
-            },
-            "include-path": [
-                "/"
-            ],
-            "license": [
-                "BSD Style"
-            ],
-            "description": "Mail_Mime provides classes to deal with the creation and manipulation of MIME messages.\nIt allows people to create e-mail messages consisting of:\n* Text Parts\n* HTML Parts\n* Inline HTML Images\n* Attachments\n* Attached messages\n\nIt supports big messages, base64 and quoted-printable encodings and\nnon-ASCII characters in filenames, subjects, recipients, etc. encoded\nusing RFC2047 and/or RFC2231."
-        },
-        {
-            "name": "pear-pear.php.net/Mail_mimeDecode",
-            "version": "1.5.5",
-            "dist": {
-                "type": "file",
-                "url": "http://pear.php.net/get/Mail_mimeDecode-1.5.5.tgz",
-                "reference": null,
-                "shasum": null
+                "php": ">=5.3.3"
             },
-            "require": {
-                "pear-pear.php.net/mail_mime": ">1.4.0.0",
-                "php": ">=4.3.0.0"
+            "require-dev": {
+                "phing/phing": "~2.7",
+                "phpunit/phpunit": "^4.8.35|^5.7|^6.0|^9.4",
+                "squizlabs/php_codesniffer": "~2.0"
             },
-            "replace": {
-                "pear-pear/mail_mimedecode": "== 1.5.5.0"
+            "suggest": {
+                "ext-gmp": "Install the GMP (GNU Multiple Precision) extension in order to speed up arbitrary precision integer arithmetic operations.",
+                "ext-libsodium": "SSH2/SFTP can make use of some algorithms provided by the libsodium-php extension.",
+                "ext-mcrypt": "Install the Mcrypt extension in order to speed up a few other cryptographic operations.",
+                "ext-openssl": "Install the OpenSSL extension in order to speed up a wide variety of cryptographic operations."
             },
-            "type": "pear-library",
+            "type": "library",
             "autoload": {
-                "classmap": [
-                    ""
-                ]
+                "files": [
+                    "phpseclib/bootstrap.php"
+                ],
+                "psr-4": {
+                    "phpseclib\\": "phpseclib/"
+                }
             },
-            "include-path": [
-                "/"
-            ],
+            "notification-url": "https://packagist.org/downloads/",
             "license": [
-                "BSD Style"
-            ],
-            "description": "Provides a class to deal with the decoding and interpreting of mime messages.\n This package used to be part of the Mail_Mime package, but has been split off."
-        },
-        {
-            "name": "pear-pear.php.net/Net_URL2",
-            "version": "2.2.0",
-            "dist": {
-                "type": "file",
-                "url": "http://pear.php.net/get/Net_URL2-2.2.0.tgz",
-                "reference": null,
-                "shasum": null
-            },
-            "require": {
-                "php": ">=5.1.4.0"
-            },
-            "replace": {
-                "pear-pear/net_url2": "== 2.2.0.0"
-            },
-            "type": "pear-library",
-            "autoload": {
-                "classmap": [
-                    ""
-                ]
-            },
-            "include-path": [
-                "/"
-            ],
-            "license": [
-                "BSD-3-Clause"
-            ],
-            "description": "Provides parsing of URLs into their constituent parts (scheme, host, path etc.), URL generation, and resolving of\n    relative URLs."
-        },
-        {
-            "name": "pear-pear.php.net/PEAR",
-            "version": "1.10.1",
-            "dist": {
-                "type": "file",
-                "url": "http://pear.php.net/get/PEAR-1.10.1.tgz",
-                "reference": null,
-                "shasum": null
-            },
-            "require": {
-                "ext-pcre": "*",
-                "ext-xml": "*",
-                "pear-pear.php.net/archive_tar": ">=1.4.0.0",
-                "pear-pear.php.net/console_getopt": ">=1.4.1.0",
-                "pear-pear.php.net/structures_graph": ">=1.1.0.0",
-                "pear-pear.php.net/xml_util": ">=1.3.0.0",
-                "php": ">=5.4.0.0"
-            },
-            "conflict": {
-                "pear-pear.php.net/pear_frontend_gtk": "<0.4.0.0",
-                "pear-pear.php.net/pear_frontend_web": "<=0.4.0.0"
-            },
-            "replace": {
-                "pear-pear/pear": "== 1.10.1.0"
-            },
-            "type": "pear-library",
-            "autoload": {
-                "classmap": [
-                    ""
-                ]
-            },
-            "include-path": [
-                "/"
-            ],
-            "license": [
-                "New BSD License"
-            ],
-            "description": "The PEAR package contains:\n * the PEAR installer, for creating, distributing\n   and installing packages\n * the PEAR_Exception PHP5 error handling mechanism\n * the PEAR_ErrorStack advanced error handling mechanism\n * the PEAR_Error error handling mechanism\n * the OS_Guess class for retrieving info about the OS\n   where PHP is running on\n * the System class for quick handling of common operations\n   with files and directories\n * the PEAR base class\n  Features in a nutshell:\n  * full support for channels\n  * pre-download dependency validation\n  * new package.xml 2.0 format allows tremendous flexibility while maintaining BC\n  * support for optional dependency groups and limited support for sub-packaging\n  * robust dependency support\n  * full dependency validation on uninstall\n  * remote install for hosts with only ftp access - no more problems with\n    restricted host installation\n  * full support for mirroring\n  * support for bundling several packages into a single tarball\n  * support for static dependencies on a url-based package\n  * support for custom file roles and installation tasks"
-        },
-        {
-            "name": "pear-pear.php.net/Structures_Graph",
-            "version": "1.1.1",
-            "dist": {
-                "type": "file",
-                "url": "http://pear.php.net/get/Structures_Graph-1.1.1.tgz",
-                "reference": null,
-                "shasum": null
-            },
-            "require": {
-                "php": ">=5.3.0.0"
-            },
-            "replace": {
-                "pear-pear/structures_graph": "== 1.1.1.0"
-            },
-            "type": "pear-library",
-            "autoload": {
-                "classmap": [
-                    ""
-                ]
-            },
-            "include-path": [
-                "/"
-            ],
-            "license": [
-                "LGPL-3.0+"
-            ],
-            "description": "Structures_Graph is a package for creating and manipulating graph datastructures. It allows building of directed\nand undirected graphs, with data and metadata stored in nodes. The library provides functions for graph traversing\nas well as for characteristic extraction from the graph topology."
-        },
-        {
-            "name": "pear-pear.php.net/XML_Util",
-            "version": "1.3.0",
-            "dist": {
-                "type": "file",
-                "url": "http://pear.php.net/get/XML_Util-1.3.0.tgz",
-                "reference": null,
-                "shasum": null
-            },
-            "require": {
-                "ext-pcre": "*",
-                "php": ">=5.3.0.0"
-            },
-            "replace": {
-                "pear-pear/xml_util": "== 1.3.0.0"
-            },
-            "type": "pear-library",
-            "autoload": {
-                "classmap": [
-                    ""
-                ]
-            },
-            "include-path": [
-                "/"
-            ],
-            "license": [
-                "BSD License"
-            ],
-            "description": "Selection of methods that are often needed when working with XML documents.  Functionality includes creating of attribute lists from arrays, creation of tags, validation of XML names and more."
-        },
-        {
-            "name": "phpseclib/phpseclib",
-            "version": "2.0.1",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/phpseclib/phpseclib.git",
-                "reference": "ba6fb78f727cd09f2a649113b95468019e490585"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/phpseclib/phpseclib/zipball/ba6fb78f727cd09f2a649113b95468019e490585",
-                "reference": "ba6fb78f727cd09f2a649113b95468019e490585",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.3.3"
-            },
-            "require-dev": {
-                "phing/phing": "~2.7",
-                "phpunit/phpunit": "~4.0",
-                "sami/sami": "~2.0",
-                "squizlabs/php_codesniffer": "~2.0"
-            },
-            "suggest": {
-                "ext-gmp": "Install the GMP (GNU Multiple Precision) extension in order to speed up arbitrary precision integer arithmetic operations.",
-                "ext-libsodium": "SSH2/SFTP can make use of some algorithms provided by the libsodium-php extension.",
-                "ext-mcrypt": "Install the Mcrypt extension in order to speed up a few other cryptographic operations.",
-                "ext-openssl": "Install the OpenSSL extension in order to speed up a wide variety of cryptographic operations."
-            },
-            "type": "library",
-            "autoload": {
-                "psr-4": {
-                    "phpseclib\\": "phpseclib/"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
+                "MIT"
             ],
             "authors": [
                 {
@@ -1939,20 +1870,87 @@
                 "x.509",
                 "x509"
             ],
-            "time": "2016-01-18 17:07:21"
+            "support": {
+                "issues": "https://github.com/phpseclib/phpseclib/issues",
+                "source": "https://github.com/phpseclib/phpseclib/tree/2.0.34"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/terrafrost",
+                    "type": "github"
+                },
+                {
+                    "url": "https://www.patreon.com/phpseclib",
+                    "type": "patreon"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/phpseclib/phpseclib",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2021-10-27T02:46:30+00:00"
+        },
+        {
+            "name": "psr/cache",
+            "version": "1.0.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/php-fig/cache.git",
+                "reference": "d11b50ad223250cf17b86e38383413f5a6764bf8"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/php-fig/cache/zipball/d11b50ad223250cf17b86e38383413f5a6764bf8",
+                "reference": "d11b50ad223250cf17b86e38383413f5a6764bf8",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.0"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.0.x-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Psr\\Cache\\": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "PHP-FIG",
+                    "homepage": "http://www.php-fig.org/"
+                }
+            ],
+            "description": "Common interface for caching libraries",
+            "keywords": [
+                "cache",
+                "psr",
+                "psr-6"
+            ],
+            "support": {
+                "source": "https://github.com/php-fig/cache/tree/master"
+            },
+            "time": "2016-08-06T20:24:11+00:00"
         },
         {
             "name": "psr/http-message",
-            "version": "1.0",
+            "version": "1.0.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/php-fig/http-message.git",
-                "reference": "85d63699f0dbedb190bbd4b0d2b9dc707ea4c298"
+                "reference": "f6561bf28d520154e4b0ec72be95418abe6d9363"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/php-fig/http-message/zipball/85d63699f0dbedb190bbd4b0d2b9dc707ea4c298",
-                "reference": "85d63699f0dbedb190bbd4b0d2b9dc707ea4c298",
+                "url": "https://api.github.com/repos/php-fig/http-message/zipball/f6561bf28d520154e4b0ec72be95418abe6d9363",
+                "reference": "f6561bf28d520154e4b0ec72be95418abe6d9363",
                 "shasum": ""
             },
             "require": {
@@ -1980,6 +1978,7 @@
                 }
             ],
             "description": "Common interface for HTTP messages",
+            "homepage": "https://github.com/php-fig/http-message",
             "keywords": [
                 "http",
                 "http-message",
@@ -1988,26 +1987,37 @@
                 "request",
                 "response"
             ],
-            "time": "2015-05-04 20:22:00"
+            "support": {
+                "source": "https://github.com/php-fig/http-message/tree/master"
+            },
+            "time": "2016-08-06T14:39:51+00:00"
         },
         {
             "name": "psr/log",
-            "version": "1.0.0",
+            "version": "1.1.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/php-fig/log.git",
-                "reference": "fe0936ee26643249e916849d48e3a51d5f5e278b"
+                "reference": "d49695b909c3b7628b6289db5479a1c204601f11"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/php-fig/log/zipball/fe0936ee26643249e916849d48e3a51d5f5e278b",
-                "reference": "fe0936ee26643249e916849d48e3a51d5f5e278b",
+                "url": "https://api.github.com/repos/php-fig/log/zipball/d49695b909c3b7628b6289db5479a1c204601f11",
+                "reference": "d49695b909c3b7628b6289db5479a1c204601f11",
                 "shasum": ""
             },
+            "require": {
+                "php": ">=5.3.0"
+            },
             "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "1.1.x-dev"
+                }
+            },
             "autoload": {
-                "psr-0": {
-                    "Psr\\Log\\": ""
+                "psr-4": {
+                    "Psr\\Log\\": "Psr/Log/"
                 }
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -2017,16 +2027,20 @@
             "authors": [
                 {
                     "name": "PHP-FIG",
-                    "homepage": "http://www.php-fig.org/"
+                    "homepage": "https://www.php-fig.org/"
                 }
             ],
             "description": "Common interface for logging libraries",
+            "homepage": "https://github.com/php-fig/log",
             "keywords": [
                 "log",
                 "psr",
                 "psr-3"
             ],
-            "time": "2012-12-21 11:40:51"
+            "support": {
+                "source": "https://github.com/php-fig/log/tree/1.1.4"
+            },
+            "time": "2021-05-03T11:20:27+00:00"
         },
         {
             "name": "rackspace/php-opencloud",
@@ -2083,20 +2097,68 @@
                 "rackspace",
                 "swift"
             ],
-            "time": "2016-01-29 10:34:57"
+            "support": {
+                "issues": "https://github.com/rackspace/php-opencloud/issues",
+                "source": "https://github.com/rackspace/php-opencloud/tree/working"
+            },
+            "time": "2016-01-29T10:34:57+00:00"
+        },
+        {
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@@ -2157,34 +2226,45 @@
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@@ -2202,42 +2282,58 @@
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                 "signal"
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@@ -2259,29 +2355,97 @@
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+                "uri",
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@@ -2290,7 +2454,7 @@
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@@ -2314,59 +2478,290 @@
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-                "VObject",
+                "availability",
+                "freebusy",
                 "iCalendar",
+                "ical",
+                "ics",
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                 "jCard",
-                "vCard"
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+                "recurrence",
+                "rfc2425",
+                "rfc2426",
+                "rfc2739",
+                "rfc4770",
+                "rfc5545",
+                "rfc5546",
+                "rfc6321",
+                "rfc6350",
+                "rfc6351",
+                "rfc6474",
+                "rfc6638",
+                "rfc6715",
+                "rfc6868",
+                "vCalendar",
+                "vCard",
+                "vcf",
+                "xCal",
+                "xCard"
+            ],
+            "support": {
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+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Alex Vanderbist",
+                    "email": "alex.vanderbist@gmail.com",
+                    "homepage": "https://spatie.be",
+                    "role": "Developer"
+                }
+            ],
+            "description": "Flysystem Adapter for the Dropbox v2 API",
+            "homepage": "https://github.com/spatie/flysystem-dropbox",
+            "keywords": [
+                "Flysystem",
+                "api",
+                "dropbox",
+                "flysystem-dropbox",
+                "spatie",
+                "v2"
+            ],
+            "support": {
+                "issues": "https://github.com/spatie/flysystem-dropbox/issues",
+                "source": "https://github.com/spatie/flysystem-dropbox/tree/1.2.3"
+            },
+            "time": "2020-11-28T22:17:09+00:00"
+        },
+        {
+            "name": "symfony/event-dispatcher",
+            "version": "v2.8.52",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/event-dispatcher.git",
+                "reference": "a77e974a5fecb4398833b0709210e3d5e334ffb0"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/event-dispatcher/zipball/a77e974a5fecb4398833b0709210e3d5e334ffb0",
+                "reference": "a77e974a5fecb4398833b0709210e3d5e334ffb0",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3.9"
+            },
+            "require-dev": {
+                "psr/log": "~1.0",
+                "symfony/config": "^2.0.5|~3.0.0",
+                "symfony/dependency-injection": "~2.6|~3.0.0",
+                "symfony/expression-language": "~2.6|~3.0.0",
+                "symfony/stopwatch": "~2.3|~3.0.0"
+            },
+            "suggest": {
+                "symfony/dependency-injection": "",
+                "symfony/http-kernel": ""
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-master": "2.8-dev"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Component\\EventDispatcher\\": ""
+                },
+                "exclude-from-classmap": [
+                    "/Tests/"
                 ]
             },
             "notification-url": "https://packagist.org/downloads/",
@@ -2385,7 +2780,337 @@
             ],
             "description": "Symfony EventDispatcher Component",
             "homepage": "https://symfony.com",
-            "time": "2016-01-13 10:28:07"
+            "support": {
+                "source": "https://github.com/symfony/event-dispatcher/tree/v2.8.50"
+            },
+            "time": "2018-11-21T14:20:20+00:00"
+        },
+        {
+            "name": "symfony/polyfill-intl-idn",
+            "version": "v1.23.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-intl-idn.git",
+                "reference": "65bd267525e82759e7d8c4e8ceea44f398838e65"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-intl-idn/zipball/65bd267525e82759e7d8c4e8ceea44f398838e65",
+                "reference": "65bd267525e82759e7d8c4e8ceea44f398838e65",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.1",
+                "symfony/polyfill-intl-normalizer": "^1.10",
+                "symfony/polyfill-php72": "^1.10"
+            },
+            "suggest": {
+                "ext-intl": "For best performance"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-main": "1.23-dev"
+                },
+                "thanks": {
+                    "name": "symfony/polyfill",
+                    "url": "https://github.com/symfony/polyfill"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Intl\\Idn\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Laurent Bassin",
+                    "email": "laurent@bassin.info"
+                },
+                {
+                    "name": "Trevor Rowbotham",
+                    "email": "trevor.rowbotham@pm.me"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill for intl's idn_to_ascii and idn_to_utf8 functions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "idn",
+                "intl",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "support": {
+                "source": "https://github.com/symfony/polyfill-intl-idn/tree/v1.23.0"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2021-05-27T09:27:20+00:00"
+        },
+        {
+            "name": "symfony/polyfill-intl-normalizer",
+            "version": "v1.23.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-intl-normalizer.git",
+                "reference": "8590a5f561694770bdcd3f9b5c69dde6945028e8"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-intl-normalizer/zipball/8590a5f561694770bdcd3f9b5c69dde6945028e8",
+                "reference": "8590a5f561694770bdcd3f9b5c69dde6945028e8",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.1"
+            },
+            "suggest": {
+                "ext-intl": "For best performance"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-main": "1.23-dev"
+                },
+                "thanks": {
+                    "name": "symfony/polyfill",
+                    "url": "https://github.com/symfony/polyfill"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Intl\\Normalizer\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ],
+                "classmap": [
+                    "Resources/stubs"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill for intl's Normalizer class and related functions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "intl",
+                "normalizer",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "support": {
+                "source": "https://github.com/symfony/polyfill-intl-normalizer/tree/v1.23.0"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2021-02-19T12:13:01+00:00"
+        },
+        {
+            "name": "symfony/polyfill-mbstring",
+            "version": "v1.23.1",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-mbstring.git",
+                "reference": "9174a3d80210dca8daa7f31fec659150bbeabfc6"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-mbstring/zipball/9174a3d80210dca8daa7f31fec659150bbeabfc6",
+                "reference": "9174a3d80210dca8daa7f31fec659150bbeabfc6",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.1"
+            },
+            "suggest": {
+                "ext-mbstring": "For best performance"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-main": "1.23-dev"
+                },
+                "thanks": {
+                    "name": "symfony/polyfill",
+                    "url": "https://github.com/symfony/polyfill"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Mbstring\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill for the Mbstring extension",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "mbstring",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "support": {
+                "source": "https://github.com/symfony/polyfill-mbstring/tree/v1.23.1"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2021-05-27T12:26:48+00:00"
+        },
+        {
+            "name": "symfony/polyfill-php72",
+            "version": "v1.23.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/symfony/polyfill-php72.git",
+                "reference": "9a142215a36a3888e30d0a9eeea9766764e96976"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/symfony/polyfill-php72/zipball/9a142215a36a3888e30d0a9eeea9766764e96976",
+                "reference": "9a142215a36a3888e30d0a9eeea9766764e96976",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.1"
+            },
+            "type": "library",
+            "extra": {
+                "branch-alias": {
+                    "dev-main": "1.23-dev"
+                },
+                "thanks": {
+                    "name": "symfony/polyfill",
+                    "url": "https://github.com/symfony/polyfill"
+                }
+            },
+            "autoload": {
+                "psr-4": {
+                    "Symfony\\Polyfill\\Php72\\": ""
+                },
+                "files": [
+                    "bootstrap.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "authors": [
+                {
+                    "name": "Nicolas Grekas",
+                    "email": "p@tchwork.com"
+                },
+                {
+                    "name": "Symfony Community",
+                    "homepage": "https://symfony.com/contributors"
+                }
+            ],
+            "description": "Symfony polyfill backporting some PHP 7.2+ features to lower PHP versions",
+            "homepage": "https://symfony.com",
+            "keywords": [
+                "compatibility",
+                "polyfill",
+                "portable",
+                "shim"
+            ],
+            "support": {
+                "source": "https://github.com/symfony/polyfill-php72/tree/v1.23.0"
+            },
+            "funding": [
+                {
+                    "url": "https://symfony.com/sponsor",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://github.com/fabpot",
+                    "type": "github"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/symfony/symfony",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2021-05-27T09:17:38+00:00"
         }
     ],
     "aliases": [],
@@ -2394,5 +3119,6 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": [],
-    "platform-dev": []
+    "platform-dev": [],
+    "plugin-api-version": "2.0.0"
 }
diff --git a/src/CopyFilesystem.php b/src/CopyFilesystem.php
deleted file mode 100644
index aaac462..0000000
--- a/src/CopyFilesystem.php
+++ /dev/null
@@ -1,76 +0,0 @@
-<?php
-/**
- * @link https://github.com/creocoder/yii2-flysystem
- * @copyright Copyright (c) 2015 Alexander Kochetov
- * @license http://opensource.org/licenses/BSD-3-Clause
- */
-
-namespace creocoder\flysystem;
-
-use Barracuda\Copy\API;
-use League\Flysystem\Copy\CopyAdapter;
-use yii\base\InvalidConfigException;
-
-/**
- * CopyFilesystem
- *
- * @author Alexander Kochetov <creocoder@gmail.com>
- */
-class CopyFilesystem extends Filesystem
-{
-    /**
-     * @var string
-     */
-    public $consumerKey;
-    /**
-     * @var string
-     */
-    public $consumerSecret;
-    /**
-     * @var string
-     */
-    public $accessToken;
-    /**
-     * @var string
-     */
-    public $tokenSecret;
-    /**
-     * @var string|null
-     */
-    public $prefix;
-
-    /**
-     * @inheritdoc
-     */
-    public function init()
-    {
-        if ($this->consumerKey === null) {
-            throw new InvalidConfigException('The "consumerKey" property must be set.');
-        }
-
-        if ($this->consumerSecret === null) {
-            throw new InvalidConfigException('The "consumerSecret" property must be set.');
-        }
-
-        if ($this->accessToken === null) {
-            throw new InvalidConfigException('The "accessToken" property must be set.');
-        }
-
-        if ($this->tokenSecret === null) {
-            throw new InvalidConfigException('The "tokenSecret" property must be set.');
-        }
-
-        parent::init();
-    }
-
-    /**
-     * @return CopyAdapter
-     */
-    protected function prepareAdapter()
-    {
-        return new CopyAdapter(
-            new API($this->consumerKey, $this->consumerSecret, $this->accessToken, $this->tokenSecret),
-            $this->prefix
-        );
-    }
-}
diff --git a/src/DropboxFilesystem.php b/src/DropboxFilesystem.php
index e17138a..66adec9 100644
--- a/src/DropboxFilesystem.php
+++ b/src/DropboxFilesystem.php
@@ -8,6 +8,7 @@
 namespace creocoder\flysystem;
 
 use Spatie\Dropbox\Client;
+use Spatie\Dropbox\TokenProvider;
 use Spatie\FlysystemDropbox\DropboxAdapter;
 use yii\base\InvalidConfigException;
 
@@ -19,17 +20,14 @@
 class DropboxFilesystem extends Filesystem
 {
     /**
-     * @var string
+     * @var string|array|TokenProvider
      */
     public $token;
-    /**
-     * @var string
-     */
-    public $app;
+
     /**
      * @var string|null
      */
-    public $prefix;
+    public $prefix = '';
 
     /**
      * @inheritdoc
@@ -40,10 +38,6 @@ public function init()
             throw new InvalidConfigException('The "token" property must be set.');
         }
 
-        if ($this->app === null) {
-            throw new InvalidConfigException('The "app" property must be set.');
-        }
-
         parent::init();
     }
 
@@ -53,7 +47,8 @@ public function init()
     protected function prepareAdapter()
     {
         return new DropboxAdapter(
-            new Client($this->token, $this->prefix),
+            new Client($this->token),
+            $this->prefix
         );
     }
 }