Weird RimWorld Error

Exception filling window for Verse.FloatMenuMap: System.NullReferenceException: Object reference not set to an instance of an object
  at Keep_On_Linking.MyMethods.GetRandomPsycast (Verse.Pawn pawn) [0x00056] in <ddeb82d46c9e4391a38d71542c6d38af>:0
  at Keep_On_Linking.PatchAppliesToPawn.Prefix (System.Boolean& __result, Verse.Pawn p, System.String& reason, RimWorld.LordJob_Ritual ritual, RimWorld.RitualRoleAssignments assignments, RimWorld.Precept_Ritual precept, System.Boolean skipReason) [0x00050] in <ddeb82d46c9e4391a38d71542c6d38af>:0
  at (wrapper dynamic-method) RimWorld.RitualRoleAnimaLinker.RimWorld.RitualRoleAnimaLinker.AppliesToPawn_Patch1(RimWorld.RitualRoleAnimaLinker,Verse.Pawn,string&,RimWorld.LordJob_Ritual,RimWorld.RitualRoleAssignments,RimWorld.Precept_Ritual,bool)
  at RimWorld.RitualBehaviorWorker+<>c__DisplayClass5_0.<CanStartRitualNow>b__1 (Verse.Pawn p) [0x00000] in <cdbd0ed5089a418da09b9a259f9dbd8f>:0
  at System.Linq.Enumerable.Count[TSource] (System.Collections.Generic.IEnumerable`1[T] source, System.Func`2[T,TResult] predicate) [0x0002e] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
  at RimWorld.RitualBehaviorWorker.CanStartRitualNow (Verse.TargetInfo target, RimWorld.Precept_Ritual ritual, Verse.Pawn selectedPawn, System.Collections.Generic.Dictionary`2[TKey,TValue] forcedForRole) [0x00204] in <cdbd0ed5089a418da09b9a259f9dbd8f>:0
  at RimWorld.Precept_Ritual.GetRitualBeginWindow (Verse.TargetInfo targetInfo, RimWorld.RitualObligation obligation, System.Action onConfirm, Verse.Pawn organizer, System.Collections.Generic.Dictionary`2[TKey,TValue] forcedForRole, Verse.Pawn selectedPawn) [0x00032] in <cdbd0ed5089a418da09b9a259f9dbd8f>:0
  at RimWorld.CompPsylinkable+<>c__DisplayClass13_0.<CompFloatMenuOptions>b__0 () [0x0007b] in <cdbd0ed5089a418da09b9a259f9dbd8f>:0
  at Verse.FloatMenuOption.Chosen (System.Boolean colonistOrdering, Verse.FloatMenu floatMenu) [0x00030] in <cdbd0ed5089a418da09b9a259f9dbd8f>:0
  at (wrapper dynamic-method) Verse.FloatMenuOption.Verse.FloatMenuOption.DoGUI_Patch1(Verse.FloatMenuOption,UnityEngine.Rect,bool,Verse.FloatMenu)
  at Verse.FloatMenu.DoWindowContents (UnityEngine.Rect rect) [0x000fb] in <cdbd0ed5089a418da09b9a259f9dbd8f>:0
  at Verse.FloatMenuMap.DoWindowContents (UnityEngine.Rect inRect) [0x0014c] in <cdbd0ed5089a418da09b9a259f9dbd8f>:0
  at Verse.Window.InnerWindowOnGUI (System.Int32 x) [0x001ce] in <cdbd0ed5089a418da09b9a259f9dbd8f>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) Verse.Log:Verse.Log.Error_Patch1 (string)
Verse.Window:InnerWindowOnGUI (int)
UnityEngine.GUI:CallWindowDelegate (UnityEngine.GUI/WindowFunction,int,int,UnityEngine.GUISkin,int,single,single,UnityEngine.GUIStyle)