KHriss,
Adding a group isn't going to fix it if groups below are already broken.
Additionally, you're going to confuse any script in Gmod because you've added yourself in ULX to owner, but your cfg\users.txt file has you as superadmin.
That isn't going to be root problem though.
You ran that from server, not client, console, right?
Was anyone connected to the server when you ran debuginfo?
If so, you have an addon breaking gmod spawn or auth hooks. They're empty in the output.
If not, you and or other supers need to join and then run the command again.