Root level exception in OnGUI(): System.NullReferenceException: Object reference not set to an instance of an object
at VanillaPsycastsExpanded.Technomancer.Psyring.get_Label () [0x00010] in <66ca6b9417364443a77dbdc7e9fd7e79>:0
at Verse.Thing.get_LabelCap () [0x00000] in <cd7169108ea74757aa50c5b33d275c15>:0
at Verse.Entity.get_LabelMouseover () [0x00000] in <cd7169108ea74757aa50c5b33d275c15>:0
at Verse.MouseoverReadout.MouseoverReadoutOnGUI () [0x003e2] in <cd7169108ea74757aa50c5b33d275c15>:0
at RimWorld.MapInterface.MapInterfaceOnGUI_BeforeMainTabs () [0x000c3] in <cd7169108ea74757aa50c5b33d275c15>:0
at RimWorld.UIRoot_Play.UIRootOnGUI () [0x0001f] in <cd7169108ea74757aa50c5b33d275c15>:0
at (wrapper dynamic-method) Verse.Root.Verse.Root.OnGUI_Patch1(Verse.Root)
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) Verse.Log:Verse.Log.Error_Patch1 (string)
(wrapper dynamic-method) Verse.Root:Verse.Root.OnGUI_Patch1 (Verse.Root)


this is error log,



visible problem :

ui disappears when mouse cursor is placed on the psyring

Disappears when a pawn wears a psyring




Things I tried to solve the problem :

Reinstall Mode (psycasts expanded, framework)

Reinstall rimworld, and integrity check



Thanks for your help.