DarkRP Jobs Thumbnail error

Hey Forum.
i bought a gmod server yesterday and installed darkrp
and edited the gangster and mob boss player models and switched them with 1950s gangsters. Anyway, so when i restarted the server the jobs are there in the server list but the little thumbnail picture for both the classes shows an error. however when the job is picked the model works fine. it only shows as an error in f4 menu.

PS everything is installed in workshop.lua and stuff as well so its not that. Any ideas?