GMODRacer problem - serveur and Gamemode

hello after having GMODRacer install on my server I get an error that do bugger mod

ERROR: GAMEMODE:‘HUDPaintBackground’ Failed: [gmodracer\gamemode\cl_draw.lua:148] attempt to call method ‘GetFrameLevel’ (a nil value)

and Can you help me fix the error
or

give me a link to download GameMode

pls help me