I recently bought garry’s mod and started to play on custom server everything seem’d normal but then i saw many of “ERROR” things don’t know how to call i know someone told me that i need to download some addons or something from but i don’t know which anyone can help?
P.S sorry that i made post instead of looking for help in other threads…

ERROR is put in place of any models you lack. Ask your friend what games/addons those came from and then seek those out.

Look for the addons on the workshop