Whenever I assign a bed to a pawn, this warning always

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UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Warning (string)
DubsMintMenus.Dialog_AssignBuildingOwner:.ctor (RimWorld.CompAssignableToPawn)
DubsMintMenus.Patch_CompAssignableToPawn:Prefix (RimWorld.CompAssignableToPawn&)
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:RimWorld.CompAssignableToPawn.<CompGetGizmosExtra>b__31_0_Patch1 (RimWorld.CompAssignableToPawn)
Verse.Command_Action:ProcessInput (UnityEngine.Event)
Verse.GizmoGridDrawer:DrawGizmoGrid (System.Collections.Generic.IEnumerable`1<Verse.Gizmo>,single,Verse.Gizmo&,System.Func`2<Verse.Gizmo, bool>,System.Func`2<Verse.Gizmo, bool>,System.Func`2<Verse.Gizmo, bool>,bool)
Verse.GizmoGridDrawer:DrawGizmoGridFor (System.Collections.Generic.IEnumerable`1<object>,Verse.Gizmo&)
RimWorld.MapGizmoUtility:MapUIOnGUI ()
RimWorld.MapInterface:MapInterfaceOnGUI_BeforeMainTabs ()
RimWorld.UIRoot_Play:UIRootOnGUI ()
Verse.Root:OnGUI ()