After upgrading the FluentValidation NuGet package in my WPF application from version 11.0.2 to 11.4.0, I began to receive the following error when attempting to execute my test suite:
System.IO.FileLoadException
HResult=0x80131040
Message=Could not load file or assembly 'System.Threading.Tasks.Extensions, Version=4.2.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
Source=FluentValidation
My NuGet packages folder contains the system.threading.tasks.extensions package for versions 4.4.2 and 4.5.4, but not 4.2.0.0.
I am not sure why I am getting this error, or how to resolve it.
I have reviewed the answers to questions by others having similar problems, but without finding a solution.
