Need help with gmod racer

How to fix these errors?:
Timer Error: [gamemodes\gmodracer\gamemode\sv_networking.lua:37] attempt to concatenate local ‘Map’ (a nil value)
ERROR: GAMEMODE:‘ShowTeam’ Failed: [gamemodes\gmodracer\gamemode\sv_binds.lua:363] attempt to index field ‘GarageViewLocationEntity’ (a nil value)
ERROR: GAMEMODE:‘PlayerInitialSpawn’ Failed: [gamemodes\gmodracer\gamemode\sv_binds.lua:485] attempt to concatenate a nil value
I have gmod racer with database(Not localhost)