diff --git a/Source/Podio .NET/Exceptions/PodioException.cs b/Source/Podio .NET/Exceptions/PodioException.cs
index d9a8c6d..9659d61 100644
--- a/Source/Podio .NET/Exceptions/PodioException.cs	
+++ b/Source/Podio .NET/Exceptions/PodioException.cs	
@@ -207,7 +207,18 @@ public PodioUnavailableException(SerializationInfo info, StreamingContext contex
         }
 #endif
     }
-
+    public class PodioInvalidJsonException : PodioException
+    {
+        public PodioInvalidJsonException(int status, PodioError error)
+            : base(status, error)
+        {
+        }
+#if !NETSTANDARD1_3
+        public PodioInvalidJsonException(SerializationInfo info, StreamingContext context) : base(info, context)
+        {
+        }
+#endif
+    }
     /// <summary>
     ///     Represent the error response from API
     /// </summary>
diff --git a/Source/Podio .NET/Models/Task.cs b/Source/Podio .NET/Models/Task.cs
index 2bb5cbe..f6bbffc 100644
--- a/Source/Podio .NET/Models/Task.cs	
+++ b/Source/Podio .NET/Models/Task.cs	
@@ -7,7 +7,7 @@ namespace PodioAPI.Models
     public class Task
     {
         [JsonProperty("task_id")]
-        public string TaskId { get; set; }
+        public int TaskId { get; set; }
 
         [JsonProperty("status")]
         public string Status { get; set; }
diff --git a/Source/Podio .NET/Podio.cs b/Source/Podio .NET/Podio.cs
index 5ed8501..9864947 100644
--- a/Source/Podio .NET/Podio.cs	
+++ b/Source/Podio .NET/Podio.cs	
@@ -1,4 +1,5 @@
-using PodioAPI.Exceptions;
+using Newtonsoft.Json;
+using PodioAPI.Exceptions;
 using PodioAPI.Models;
 using PodioAPI.Services;
 using PodioAPI.Utils;
@@ -75,8 +76,11 @@ internal async Task<T> Get<T>(string url, Dictionary<string, string> requestData
             }
             else
             {
-                var jsonString = JSONSerializer.Serilaize(requestData);
-                request.Content = new StringContent(jsonString, Encoding.UTF8, "application/json");
+                if (requestData != null)
+                {
+                    var jsonString = JSONSerializer.Serilaize(requestData);
+                    request.Content = new StringContent(jsonString, Encoding.UTF8, "application/json");
+                }
             }
 
             return await Request<T>(request);
@@ -159,31 +163,44 @@ internal async Task<T> Get<T>(string url, Dictionary<string, string> requestData
             else
             {
                 var responseBody = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
-                var podioError = JSONSerializer.Deserialize<PodioError>(responseBody);
-
-                if (response.StatusCode == HttpStatusCode.Unauthorized)
+                try
                 {
-                    // If RefreshToken exists, refresh the access token and try the request again
-                    if (OAuth is PodioOAuth podioOAuth && !string.IsNullOrEmpty(podioOAuth.RefreshToken) && podioError.ErrorDescription == "expired_token" || podioError.Error == "invalid_token")
+                    var podioError = JSONSerializer.Deserialize<PodioError>(responseBody);
+
+                    if (response.StatusCode == HttpStatusCode.Unauthorized)
                     {
-                        var authInfo = await RefreshAccessToken().ConfigureAwait(false);
-                        if (authInfo != null && !string.IsNullOrEmpty(authInfo.AccessToken))
+                        // If RefreshToken exists, refresh the access token and try the request again
+                        if (OAuth is PodioOAuth podioOAuth && !string.IsNullOrEmpty(podioOAuth.RefreshToken) && podioError.ErrorDescription == "expired_token" || podioError.Error == "invalid_token")
+                        {
+                            var authInfo = await RefreshAccessToken().ConfigureAwait(false);
+                            if (authInfo != null && !string.IsNullOrEmpty(authInfo.AccessToken))
+                            {
+                                requestCopy.Headers.Authorization = new AuthenticationHeaderValue("OAuth2", authInfo.AccessToken);
+                                return await Request<T>(requestCopy, isFileDownload, returnAsString);
+                            }
+                        }
+                        else
                         {
-                            requestCopy.Headers.Authorization = new AuthenticationHeaderValue("OAuth2", authInfo.AccessToken);
-                            return await Request<T>(requestCopy, isFileDownload, returnAsString);
+                            OAuth = null;
+                            throw new PodioAuthorizationException((int)response.StatusCode, podioError);
                         }
                     }
                     else
                     {
-                        OAuth = null;
-                        throw new PodioAuthorizationException((int)response.StatusCode, podioError);
-                    } 
+                        ProcessErrorResponse(response.StatusCode, podioError);
+                    }
+
                 }
-                else
+                catch (JsonException ex)
                 {
-                    ProcessErrorResponse(response.StatusCode, podioError);
+                    throw new PodioInvalidJsonException((int)response.StatusCode, new PodioError
+                    {
+                        Error = "Error response is not a valid Json string.",
+                        ErrorDescription = ex.ToString(),
+                        ErrorDetail = responseBody
+                    });
                 }
-
+               
                 return default(T);
             }
         }
@@ -215,6 +232,7 @@ private HttpRequestMessage CreateHttpRequest(string url, HttpMethod httpMethod,
         private void ProcessErrorResponse(HttpStatusCode statusCode, PodioError podioError)
         {
             var status = (int)statusCode;
+           
             switch (status)
             {
                 case 400:
diff --git a/Source/Podio .NET/Services/FileService.cs b/Source/Podio .NET/Services/FileService.cs
index a432b52..063cb75 100644
--- a/Source/Podio .NET/Services/FileService.cs	
+++ b/Source/Podio .NET/Services/FileService.cs	
@@ -318,5 +318,21 @@ public async Task<FileResponse> DownloadFile(FileAttachment fileAttachment)
             };
             return await _podio.Get<FileResponse>(fileLink, new Dictionary<string, string>(), true);
         }
+        /// <summary>
+        /// Add linked account file (like sharefile, google drive)
+        /// </summary>
+        /// <param name="linkedAccountId"></param>
+        /// <param name="externalFileId"></param>
+        /// <param name="preservePermissions"></param>
+        /// <returns></returns>
+        public async Task<FileAttachment> UploadLinkedAccountFile(int linkedAccountId, string externalFileId, bool preservePermissions = true)
+        {
+            var url = $"/file/linked_account/{linkedAccountId}/";
+            var request = new
+            {
+                external_file_id = externalFileId
+            };
+            return await _podio.Post<FileAttachment>(url, request);
+        }
     }
 }
\ No newline at end of file
diff --git a/Source/Podio .NET/Utils/ItemFields/LocationItemField.cs b/Source/Podio .NET/Utils/ItemFields/LocationItemField.cs
index 37f697d..971cfaa 100644
--- a/Source/Podio .NET/Utils/ItemFields/LocationItemField.cs	
+++ b/Source/Podio .NET/Utils/ItemFields/LocationItemField.cs	
@@ -77,6 +77,44 @@ public double? Longitude
                 this.Values.First()["lng"] = value;
             }
         }
+        public string StreetAddress
+        {
+            get
+            {
+                if (this.Values.Any())
+                {
+                    return (string)this.Values.First["street_address"];
+                }
+
+                return null;
+            }
+        }
+
+        public string City
+        {
+            get
+            {
+                if (this.Values.Any())
+                {
+                    return (string)this.Values.First["city"];
+                }
+
+                return null;
+            }
+        }
+
+        public string PostalCode
+        {
+            get
+            {
+                if (this.Values.Any())
+                {
+                    return (string)this.Values.First["postal_code"];
+                }
+
+                return null;
+            }
+        }
 
         public string Country
         {