Could not load type '' from assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'.

I have added project of version 4.5 in Asp.Net Core 1.1. There was compatibility issue then I have installed package

Install-Package Microsoft.NETCore.Portable.Compatibility -Version 1.0.1

 After package installation I am able to resolve compatibility issue but now getting run-time error "Could not load type '' from assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e'."

If anyone have idea about please help.

Thanks