Server says no map, singleplayer says I do.

This just recently happened (about 20 minutes ago) it was working just last night and I set my laptop on standby and fire it up and try joining any GMOD server and it gives me the same problem, no map. Although in my singleplayer map list all of those maps are there and I can play on them.

I recently installed one map (give or take 5 minutes of this issue happening) which was freespace airport which it included materials and settings and map folders. Could it possibly overwrite a key file?

Help please.

I’m no expert, but I suggest you uninstall it then reinstall it.