I got a error!

I got an error that says Copying assembly from ‘Temp/Unity.TextMeshPro.Editor.dll’ to ‘Library/ScriptAssemblies/Unity.TextMeshPro.Editor.dll’ failed

when it was building the program it had another error and this error it not when you execute your game to an actual playable game.

Removing Text Mesh Pro from Window > Package Manager might help, if you do not actually need this package.