diff --git a/.editorconfig b/.editorconfig
index 0f4bf43..3cc3219 100644
--- a/.editorconfig
+++ b/.editorconfig
@@ -4,7 +4,7 @@
 root = true
 
 [*]
-indent_style = tab
+indent_style = space
 indent_size = 4
 end_of_line = lf
 charset = utf-8
diff --git a/composer.json b/composer.json
index 0f4857e..51d6fe9 100644
--- a/composer.json
+++ b/composer.json
@@ -31,10 +31,10 @@
 	"minimum-stability": "dev",
 	"prefer-stable": true,
 	"require": {
-		"leafs/http": "^2.1",
-		"leafs/router": "^0.1.7",
-		"leafs/anchor": "^1.2",
-		"leafs/exception": "^3.0"
+		"leafs/http": "*",
+		"leafs/router": "*",
+		"leafs/anchor": "*",
+		"leafs/exception": "*"
 	},
 	"require-dev": {
 		"pestphp/pest": "^1.21",
diff --git a/src/App.php b/src/App.php
index d4f2923..e754104 100755
--- a/src/App.php
+++ b/src/App.php
@@ -38,12 +38,14 @@ class App extends Router
      */
     public function __construct(array $userSettings = [])
     {
-        $this->setupErrorHandler();
-
-        if (count($userSettings) > 0) {
-            Config::set($userSettings);
+        if (class_exists('\Leaf\BareUI')) {
+            View::attach(\Leaf\BareUI::class, 'template');
         }
 
+        $this->setupErrorHandler();
+        $this->container = new \Leaf\Helpers\Container();
+        $this->loadConfig($userSettings);
+
         if (class_exists('\Leaf\Anchor\CSRF')) {
             if (!Anchor\CSRF::token()) {
                 Anchor\CSRF::init();
@@ -56,21 +58,21 @@ public function __construct(array $userSettings = [])
                 exit();
             }
         }
+    }
 
-        $this->container = new \Leaf\Helpers\Container();
-
-        $this->setupDefaultContainer();
-
-        if (class_exists('\Leaf\BareUI')) {
-            View::attach(\Leaf\BareUI::class, 'template');
+    protected function loadConfig(array $userSettings = [])
+    {
+        if (count($userSettings) > 0) {
+            Config::set($userSettings);
         }
 
+        $this->setupDefaultContainer();
         $this->loadViewEngines();
     }
 
     protected function setupErrorHandler()
     {
-        if ($this->config('debug') === true) {
+        if (Anchor::toBool($this->config('debug')) === true) {
             $debugConfig = [E_ALL, 1];
             $this->errorHandler = (new \Leaf\Exception\Run());
             $this->errorHandler->register();
@@ -90,27 +92,29 @@ protected function setupErrorHandler()
      */
     public function setErrorHandler($handler, bool $wrapper = true)
     {
-        $errorHandler = $handler;
+        if (Anchor::toBool($this->config('debug')) === false) {
+            $errorHandler = $handler;
 
-        if ($this->errorHandler instanceof \Leaf\Exception\Run) {
-            $this->errorHandler->unregister();
-        }
+            if ($this->errorHandler instanceof \Leaf\Exception\Run) {
+                $this->errorHandler->unregister();
+            }
 
-        if ($handler instanceof \Leaf\Exception\Handler\Handler) {
-            $this->errorHandler = new \Leaf\Exception\Run();
-            $this->errorHandler->pushHandler($handler)->register();
-        }
+            if ($handler instanceof \Leaf\Exception\Handler\Handler) {
+                $this->errorHandler = new \Leaf\Exception\Run();
+                $this->errorHandler->pushHandler($handler)->register();
+            }
 
-        if ($wrapper) {
-            $errorHandler = function ($errno, $errstr = '', $errfile = '', $errline = '') use ($handler) {
-                $exception = Exception\General::toException($errno, $errstr, $errfile, $errline);
-                Http\Response::status(500);
-                call_user_func_array($handler, [$exception]);
-                exit();
-            };
-        }
+            if ($wrapper) {
+                $errorHandler = function ($errno, $errstr = '', $errfile = '', $errline = '') use ($handler) {
+                    $exception = Exception\General::toException($errno, $errstr, $errfile, $errline);
+                    Http\Headers::resetStatus(500);
+                    call_user_func_array($handler, [$exception]);
+                    exit();
+                };
+            }
 
-        set_error_handler($errorHandler);
+            set_error_handler($errorHandler);
+        }
     }
 
     /**
@@ -175,33 +179,32 @@ private function setupDefaultContainer()
         }
 
         // Default mode
-        (function () {
-            $mode = $this->config('mode');
+        $mode = $this->config('mode');
 
-            if (_env('APP_ENV')) {
-                $mode = _env('APP_ENV');
-            }
+        if (_env('APP_ENV')) {
+            $mode = _env('APP_ENV');
+        }
 
-            if (_env('LEAF_MODE')) {
-                $mode = _env('LEAF_MODE');
-            }
+        if (_env('LEAF_MODE')) {
+            $mode = _env('LEAF_MODE');
+        }
 
-            if (isset($_ENV['LEAF_MODE'])) {
-                $mode = $_ENV['LEAF_MODE'];
-            } else {
-                $envMode = getenv('LEAF_MODE');
+        if (isset($_ENV['LEAF_MODE'])) {
+            $mode = $_ENV['LEAF_MODE'];
+        } else {
+            $envMode = getenv('LEAF_MODE');
 
-                if ($envMode !== false) {
-                    $mode = $envMode;
-                }
+            if ($envMode !== false) {
+                $mode = $envMode;
             }
+        }
 
-            $this->config('mode', $mode);
-        })();
-
-        Config::set('app', [
-            'instance' => $this,
-            'container' => $this->container,
+        Config::set([
+            'mode' => $mode,
+            'app' => [
+                'instance' => $this,
+                'container' => $this->container,
+            ],
         ]);
     }
 
@@ -251,6 +254,7 @@ public function config($name, $value = null)
         }
 
         Config::set($name, $value);
+        $this->loadConfig();
         $this->setupErrorHandler();
     }
 
@@ -261,8 +265,8 @@ public function config($name, $value = null)
      */
     public function setRequestClass($class)
     {
-        $this->container->singleton('request', function () {
-            return new \Leaf\Http\Request();
+        $this->container->singleton('request', function () use ($class) {
+            return new $class();
         });
     }
 
@@ -327,7 +331,6 @@ public function response()
         return $this->response;
     }
 
-
     /**
      * Create mode-specific code
      *
@@ -361,7 +364,7 @@ public static function script($mode, $callback)
      */
     public function root()
     {
-        return rtrim($_SERVER['DOCUMENT_ROOT'], '/') . rtrim($this->request->getRootUri(), '/') . '/';
+        return rtrim($_SERVER['DOCUMENT_ROOT'], '/') . rtrim($this->request->getScriptName(), '/') . '/';
     }
 
     /**
diff --git a/tests/app.test.php b/tests/app.test.php
index 3e76c88..0d15310 100644
--- a/tests/app.test.php
+++ b/tests/app.test.php
@@ -29,29 +29,28 @@
 });
 
 test('set 404', function () {
-    app()->config('app.down', false);
+    app()->config('testKey.one', 'ooooo');
 
     $_SERVER['REQUEST_METHOD'] = 'POST';
     $_SERVER['REQUEST_URI'] = '/home';
 
     app()->set404(function () {
-        app()->config('app.down', true);
+        app()->config('testKey.one', true);
     });
 
     app()->run();
 
-    expect(app()->config('app.down'))->toBe(true);
+    expect(app()->config('testKey.one'))->toBe(true);
 });
 
 test('leaf middleware', function () {
-    $app = new Leaf\App();
-    app()->config('app.down', false);
+    app()->config('anotherKey', false);
 
     class AppMid extends \Leaf\Middleware
     {
         public function call()
         {
-            app()->config('app.down', true);
+            app()->config('anotherKey', true);
             $this->next();
         }
     }
@@ -64,7 +63,7 @@ public function call()
     });
     app()->run();
 
-    expect(app()->config('app.down'))->toBe(true);
+    expect(app()->config('anotherKey'))->toBe(true);
 });
 
 test('in-route middleware', function () {
@@ -72,17 +71,17 @@ public function call()
     $_SERVER['REQUEST_URI'] = '/';
 
     $app = new Leaf\App();
-    $app->config('app.down', false);
+    $app->config('useMiddleware', false);
 
     $m = function () use ($app) {
-        $app->config('app.down', true);
+        $app->config('useMiddleware', true);
     };
 
     $app->get('/', ['middleware' => $m, function () {
     }]);
     $app->run();
 
-    expect($app->config('app.down'))->toBe(true);
+    expect($app->config('useMiddleware'))->toBe(true);
 });
 
 test('before route middleware', function () {
diff --git a/tests/config.test.php b/tests/config.test.php
index 78a22c0..fe29c86 100644
--- a/tests/config.test.php
+++ b/tests/config.test.php
@@ -21,23 +21,23 @@
 });
 
 test('nested config', function () {
-    app()->config('app.key', '2');
+    app()->config('randomKey.number', '2');
 
-    $appConfig = app()->config('app');
+    $randomKey = app()->config('randomKey');
 
-    expect(isset($appConfig['key']))->toBeTrue();
-    expect($appConfig['key'])->toBe('2');
-    expect(app()->config('app.key'))->toBe('2');
+    expect(isset($randomKey['number']))->toBeTrue();
+    expect($randomKey['number'])->toBe('2');
+    expect(app()->config('randomKey.number'))->toBe('2');
 });
 
 test('nested config (array)', function () {
-    app()->config(['app.key' => '2']);
+    app()->config(['nestedKey.number' => '2']);
 
-    $appConfig = app()->config('app');
+    $nestedKey = app()->config('nestedKey');
 
-    expect(isset($appConfig['key']))->toBeTrue();
-    expect($appConfig['key'])->toBe('2');
-    expect(app()->config('app.key'))->toBe('2');
+    expect(isset($nestedKey['number']))->toBeTrue();
+    expect($nestedKey['number'])->toBe('2');
+    expect(app()->config('nestedKey.number'))->toBe('2');
 });
 
 test('nested config (custom group)', function () {