Anything I try gives me this error

hi and changed pc and loaded all the files of my project, there is always an error that gives me the engine, and verified the record and says this, I want to add that only happens when process for UATHelper windows: Processing (Windows): ERROR : Failed to get assembly types for D: \ UE_4.22 \ Engine \ Binaries \ DotNET \ AutomationScripts \ HTML5 \ HTML5.Automation.dll
UATHelper: Processing (Windows): ERROR: Loader Exceptions:
UATHelper: Processing (Windows): ERROR: Exception in: Unable to load the file or assembly ‘System.Net.Http, Version = 4.0.0.0, Culture = neutral, PublicKeyToken = b03f5f7f11d50a3a’ or one of its dependencies. The system can not find the specified file.
UATHelper: Processing (Windows): Stacktrace:
UATHelper: Processing (Windows): ERROR: System.Reflection.ReflectionTypeLoadException: One or more required types can not be loaded. Retrieve the LoaderExceptions property for more information.

I am quite new in this I would appreciate any help