On Line 26 of the config.lua, youre missing a "}" after superadmin.
Sexywalrus, the first error of all the screen images that you posted states that exactly.
You don't have to be a coder to understand Gmod errors.
Sure, it helps sometimes, but, if instructions given to you for a mod tell you to edit some file, and then that mod breaks after editing it, and the Gmod error just happens to tell you that the file you just edited is now giving the first error of server startup, well, guess where to look first. The line the error gives you, near the words it gives.