Sometimes my users are getting the following lua error:
[ERROR] lua/vgui/dpropertysheet.lua:220: attempt to call method 'GetPanel' (a nil value) 1. Func - lua/vgui/dpropertysheet.lua:220 2. Run - lua/derma/derma_animation.lua:23 3. unknown - lua/vgui/dpropertysheet.lua:214
I’m having a hard time diagnosing it as the stacktrace does not point me to anywhere in my own files rather than the built-in garrysmod files. Is there any trick to this that I use? I cannot reproduce the error myself and there does not seem to be a specific sequence of events that leads up to it happening.