PackagingResults:Error: Error Unknown Error

Whenever I try to build my project with 4.11.2 I get this build error:

Hey ,

This is the error I see within your project: MainFrameActions: Packaging (Windows (64-bit)): Program.Main: ERROR: AutomationTool terminated with exception: System.ArgumentException: An item with the same key has already been added.

Please review the following AnswerHub links and see whether or not there is a solution provided for you too. If there is not, please submit new error logs for us to review.

[AnswerHub - Error 1][1] | [AnswerHub - Error 2][2]

Thanks!

Can't package game (an item with the same key has already been added) - Programming & Scripting - Epic Developer Community Forums
[2]: Program.Main: ERROR: An item with the same key has already been added - Blueprint - Epic Developer Community Forums

Hey ,

We have not heard back from you in a few days, so we are marking this post as Resolved for tracking purposes. If you are still experiencing the issue you reported, please respond to this message with additional information and we will offer further assistance.

Thank you!

any solution?