I had a little problem.
Exception in Verse.Map.FinalizeLoading: System.NullReferenceException: Object reference not set to an instance of an object
at MedievalOverhaul.Building_Lootable.LootGeneration () [0x0001e] in <2afc7e87510f47ceba020647e1339a18>:0
at MedievalOverhaul.Building_Lootable.SpawnSetup (Verse.Map map, System.Boolean respawningAfterLoad) [0x0000a] in <2afc7e87510f47ceba020647e1339a18>:0
at Verse.GenSpawn.Spawn (Verse.Thing newThing, Verse.IntVec3 loc, Verse.Map map, Verse.Rot4 rot, Verse.WipeMode wipeMode, System.Boolean respawningAfterLoad) [0x002ef] in <8c412d4a16f94d4cb337e846f2dee469>:0
- prefix Uuugggg.rimworld.Replace_Stuff.main: Void Replace_Stuff.NewThing.TransferSettings:Prefix(Thing newThing, IntVec3 loc, Map map, Rot4 rot, Boolean respawningAfterLoad, Thing& __state)
- postfix Uuugggg.rimworld.Replace_Stuff.main: Void Replace_Stuff.NewThing.TransferSettings:Postfix(Thing __result, Thing __state)
at Verse.GenSpawn.SpawnBuildingAsPossible (Verse.Building building, Verse.Map map, System.Boolean respawningAfterLoad) [0x000f9] in <8c412d4a16f94d4cb337e846f2dee469>:0
at Verse.Map.FinalizeLoading () [0x001b7] in <8c412d4a16f94d4cb337e846f2dee469>:0
- transpiler net.pardeike.rimworld.lib.harmony: IEnumerable`1 VisualExceptions.ExceptionsAndActivatorHandler:Transpiler(IEnumerable`1 instructions, MethodBase original)