System.NullReferenceException: Object reference not set to an instance of an object
  at GBKT_Defs.GBKT_TraitChecker.WorldComponentTick () [0x007fc] in <4f44728b84da41768079bed01efbc968>:0
  at RimWorld.Planet.WorldComponentUtility.WorldComponentTick (RimWorld.Planet.World world) [0x00013] in <642567a9bd804f26a9090d82e2c3673d>:0
Verse.Log:Error(String, Boolean)
RimWorld.Planet.WorldComponentUtility:WorldComponentTick(World)
RimWorld.Planet.World:WorldTick()
Verse.TickManager:DMD<DMD<DoSingleTick_Patch1>?-2100420480::DoSingleTick_Patch1>(TickManager)
Verse.TickManager:TickManagerUpdate()
Verse.Game:UpdatePlay()
Verse.Root_Play:Update()