Got an exception on Upsert

Hi i am using this piece of code

public async Task SaveMultipleUsersINBacdendless()
                Dictionary<string, object> obj1 = new Dictionary<string, object>
                    { "Address", "Testing004" },
                    { "Gender", "Testing004" },
                    { "ownerId", "Testing004" },
                    { "objectId", "ttttt-yyyyyy-iiii" },
                    { "Name", "Testing004" }

                Dictionary<string, object> obj2 = new Dictionary<string, object>
                    { "address", "Testing0010" },
                    { "gender", "Testing0010" },
                    { "ownerId", "Testing0010" },
                    { "objectId", "oooo-ppppppppp-paaaaaaaaaaa"},
                    { "name", "Testing0010" }
                List<Dictionary<string, object>> list = new List<Dictionary<string, object>> { obj1 , obj2 };

                UnitOfWork unitOfWork = new UnitOfWork();

                // Use BulkUpsert for multiple objects
                unitOfWork.BulkUpsert("Person", list);

                // Execute the unit of work

But i got exception on unitOfWork.Execute(); this line when it was executed
The error is
unable to adapt parameter to a method argument type. unable to create an instance of abstract class/interface. Abstract/Interface class mapping is missing for com.backendless.transaction.Operation

But on the other hand if i use BulkCreate or BulkDelete it was working fine.

Hello, @haroon.ali.

We are investigating this error. Thank you for report.

Regards, Nikita.

This issue has been fixed and will be available in next release of .NET-SDK.

Regards, Nikita.

Hi @Nikita_Fedorishchev
When the next release of .NET-SDK will be available.

I can’t give exact dates, but we will try to release these changes as quickly as possible.

Hi @Nikita_Fedorishchev
Just want to know is new .Net SDK released.

Hello, @Haroon_Ali.

Sorry for waiting so long, but the fix has not been released yet.

Regards, Nikita.

Hello @Nikita_Fedorishchev

Our developer has been waiting on this fix to be released because currently our app is sending to many API calls with the SDK not working properly. When are we expecting this to be resolved?

Hello, @Denis_Zhirovetskiy.

Sorry for this we will try to release this update at this week.

Regards, Nikita.

Hello, @Denis_Zhirovetskiy and @Haroon_Ali.

We have updated the Backendless-SDK in the nuget package to version 6.7.1. The problem with BulkUpsert in transaction should have gone away.

Regards, Nikita.