Getting this error with the rimworld of magic mod; I think it's causing undead colonists to get removed when loading a saved game

Exception in RimWorld.Pawn_NeedsTracker.AddOrRemoveNeedsAsAppropriate: System.NullReferenceException: Object reference not set to an instance of an object
at RimWorld.Pawn_NeedsTracker+<>c__DisplayClass29_0.<ShouldHaveNeed>b__0 (Verse.Hediff x) [0x00000] in <360933dd75ad47e8a6d2a631ae77b5d8>:0
at System.Collections.Generic.List`1[T].FindIndex (System.Int32 startIndex, System.Int32 count, System.Predicate`1[T] match) [0x0003b] in <eae584ce26bc40229c1b1aa476bfa589>:0
at System.Collections.Generic.List`1[T].FindIndex (System.Predicate`1[T] match) [0x00000] in <eae584ce26bc40229c1b1aa476bfa589>:0
at Verse.GenCollection.Any[T] (System.Collections.Generic.List`1[T] list, System.Predicate`1[T] predicate) [0x00000] in <360933dd75ad47e8a6d2a631ae77b5d8>:0
at RimWorld.Pawn_NeedsTracker.ShouldHaveNeed (RimWorld.NeedDef nd) [0x0014c] in <360933dd75ad47e8a6d2a631ae77b5d8>:0
- prefix OskarPotocki.VFECore: Boolean VFEMech.ShouldHaveNeed_Patch:Prefix(Pawn ___pawn, NeedDef nd, Boolean& __result)
- prefix Torann.ARimworldOfMagic: Boolean TorannMagic.TorannMagicMod+Pawn_NeedsTracker_Patch:Prefix(Pawn_NeedsTracker __instance, NeedDef nd, Pawn ___pawn, Boolean& __result)
- prefix Orion.Hospitality: Boolean Hospitality.Patches.Pawn_NeedsTracker_Patch+ShouldHaveNeed:Prefix(Boolean& __result, NeedDef nd, Pawn ___pawn)
- postfix Dubwise.DubsBadHygiene: Void DubsBadHygiene.Patches.HarmonyPatches+Patch_ShouldHaveNeed:Postfix(Pawn_NeedsTracker __instance, Boolean& __result, NeedDef nd)
at RimWorld.Pawn_NeedsTracker.AddOrRemoveNeedsAsAppropriate () [0x00016] in <360933dd75ad47e8a6d2a631ae77b5d8>:0
- transpiler net.pardeike.rimworld.lib.harmony: IEnumerable`1 VisualExceptions.ExceptionsAndActivatorHandler:Transpiler(IEnumerable`1 instructions, MethodBase original)