Why do you have errors?
The simple answer is that Garry's Mod uses other games and incorporates its materials and textures which causes some gamemodes on garrys mod to have errors if the player does not have the game.
The simple answer is that Garry's Mod uses other games and incorporates its materials and textures which causes some gamemodes on garrys mod to have errors if the player does not have the game.
Click or copy the link below for a texture fix guide.