This is a question related to mysql linkage in unity5

I coded to access the root server without going through the php server.

If you run it within the Unity program, the db integration works well.

But if you try to build and run it as an exe file, ArgumentException: The Assembly System.Configuration.Install is referenced by MySql.Data ('Assets/Plugins/MySql.Data.dll'). But the dll is not allowed to be included or could not be found. This error message appears.

I changed my build environment to .NET 2.0, and it's built and running, but I can't load the value because it's not integrated.

What should I do??