C# Compiler Warning – CS8634 the type ‘{2}’ cannot be used as type pa

In this blog post, you’ll learn more about the C# Compiler Warning – CS8634 and the related message description

C# Compiler Warning Code

CS8634

C# Compiler Description for the Code :CS8634

The type ‘{2}’ cannot be used as type parameter ‘{1}’ in the generic type or method ‘{0}’. Nullability of type argument ‘{2}’ doesn’t match ‘class’ constraint.