Internal Compiler error

Can anyone help me with this???Since i can’t do anything till i fix this since i cant test the game or anything.

Internal compiler error. See the console log for more information. output was:
Unhandled Exception: System.UnauthorizedAccessException: Access to the path “C:\Users\Ben123\Documents\New Unity Project 6\Temp\Assembly-CSharp-firstpass.dll.mdb” is denied.

Disconnect your computer from the internet. The disable your anti virus software and try again. Or, if your AV allows you to white list folders, tell it that your Unity project folder is safe.