C# Compiler Error – CS8703 the modifier ‘{0}’ is not valid for this

In this blog post, you’ll learn more about the C# Compiler Error – CS8703 and the related message description

C# Compiler Error Code

CS8703

C# Compiler Description for the Code :CS8703

The modifier ‘{0}’ is not valid for this item in C# {1}. Please use language version ‘{2}’ or greater.