So since the post, i have redone the server creation process, and it is still giving me the same error.
I have also deleted any scripts in the scripts folder, but the only one in there is "ranked.gsc". Me and a friend have the same error, and we think its from a trickshotting server we played on a year or two ago.

Neither deleting the scripts nor restarting the server creation process has worked.

Hey, i haven't installed any scripts, but i am getting the same error, this is only on the zombies side, as my multiplayer server launches fine.

Any other fixes other than just restarting the whole server creation process?