Could not load file or assembly 'Microsoft.Bot.Connector, Version=3.12.2.4, Culture=neutral, PublicKeyToken=##' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)

On using c#
Could not load file or assembly 'Microsoft.Bot.Connector, Version=3.12.2.4, Culture=neutral, PublicKeyToken=##' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.IO.FileLoadException: Could not load file or assembly 'Microsoft.Bot.Connector, Version=3.12.2.4, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
Then press on accept
Hope It helps
Happy Coding 😊
SOURCE : mscrm.com
Error
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.IO.FileLoadException: Could not load file or assembly 'Microsoft.Bot.Connector, Version=3.12.2.4, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
Reason
Resolution
Update the Microsoft. Bot. Builder library to latest version
Right Click on your Project and Click on manage NuGet Packages
Search for Microsoft.Bot.Connector and click on update
Then press on accept
Hope It helps
Happy Coding 😊
SOURCE : mscrm.com