Shark-vil/background-citizens

AI Summary: The task is to debug a Garry's Mod addon called Background NPCs. The addon is throwing an error because a configuration variable, `_cvar_bgn_debug`, is nil. The solution involves identifying why this variable isn't being set correctly, likely due to a missing or incorrect configuration setting within the addon's configuration or the server's configuration files. The provided code snippet shows a debug drawing function that relies on this variable.