attempt to concatenate a nil value

[SourceRevo]

return math.Clamp(self:GetPrivateInt("g_" .. GAMEMODE.GetRealGeneID(SkillID), 0), 0, 5);

I'm getting attempt to concatenate a nil value on the line above, but it doesn't seem to have any effect on gameplay. Any suggestions to stop the error from spamming my SRCDS console?

[Nerdeboy]

What color is the error?

[SourceRevo]

[QUOTE=Nerdeboy;35026944]What color is the error?[/QUOTE]

It appears once a player(s) is connected in my SRCDS console for my dedicated server.

[Deadman123]

Player.GetPrivateInt probably isn't defined/hasnt had it's value modified from nil

[ralle105]

GAMEMODE.GetRealGeneID(SkillID) is returning nil