Question Error: An overlay with id was already registered to window

An overlay with id (Scene View/Light Settings) was already registered to window (Scene)
An overlay with id (Orientation) was already registered to window (Scene)
0x00007ff6aa54284d (Unity) StackWalker::GetCurrentCallstack
0x00007ff6aa549529 (Unity) StackWalker::ShowCallstack
0x00007ff6ab4b9dc3 (Unity) GetStacktrace

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NullReferenceException: Object reference not set to an instance of an object
UnityEditor.Overlays.OverlayCanvas.RestoreOverlay (UnityEditor.Overlays.Overlay overlay, UnityEditor.Overlays.SaveData data) (at <99feab6f3db6407493924fe4a179a95b>:0)
UnityEditor.Overlays.OverlayCanvas.RestoreOverlays () (at <99feab6f3db6407493924fe4a179a95b>:0)
UnityEditor.Overlays.OverlayCanvas.Initialize (UnityEditor.EditorWindow window) (at <99feab6f3db6407493924fe4a179a95b>:0)
UnityEditor.EditorWindow.get_rootVisualElement () (at <99feab6f3db6407493924fe4a179a95b>:0)
UnityEditor.HostView.InvokeOnGUI (UnityEngine.Rect onGUIPosition) (at <99feab6f3db6407493924fe4a179a95b>:0)
UnityEditor.DockArea.DrawView (UnityEngine.Rect dockAreaRect) (at <99feab6f3db6407493924fe4a179a95b>:0)
UnityEditor.DockArea.OldOnGUI () (at <99feab6f3db6407493924fe4a179a95b>:0)
UnityEngine.UIElements.IMGUIContainer.DoOnGUI (UnityEngine.Event evt, UnityEngine.Matrix4x4 parentTransform, UnityEngine.Rect clippingRect, System.Boolean isComputingLayout, UnityEngine.Rect layoutSize, System.Action onGUIHandler, System.Boolean canAffectFocus) (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.UIElements.IMGUIContainer.HandleIMGUIEvent (UnityEngine.Event e, UnityEngine.Matrix4x4 worldTransform, UnityEngine.Rect clippingRect, System.Action onGUIHandler, System.Boolean canAffectFocus) (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.UIElements.IMGUIContainer.DoIMGUIRepaint () (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.UIElements.UIR.RenderChainCommand.ExecuteNonDrawMesh (UnityEngine.UIElements.UIR.DrawParams drawParams, System.Single pixelsPerPoint, System.Exception& immediateException) (at <fe7a0fa708534184bcd39b65327ff33e>:0)
Rethrow as ImmediateModeException
UnityEngine.UIElements.UIR.RenderChain.Render () (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.UIElements.UIRRepaintUpdater.Update () (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.UIElements.VisualTreeUpdater.UpdateVisualTreePhase (UnityEngine.UIElements.VisualTreeUpdatePhase phase) (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.UIElements.Panel.UpdateForRepaint () (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.UIElements.Panel.Repaint (UnityEngine.Event e) (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.UIElements.UIElementsUtility.DoDispatch (UnityEngine.UIElements.BaseVisualElementPanel panel) (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.UIElements.UIElementsUtility.UnityEngine.UIElements.IUIElementsUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr, System.Boolean& eventHandled) (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.UIElements.UIEventRegistration.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr) (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.UIElements.UIEventRegistration+<>c.<.cctor>b__1_2 (System.Int32 i, System.IntPtr ptr) (at <fe7a0fa708534184bcd39b65327ff33e>:0)
UnityEngine.GUIUtility.ProcessEvent (System.Int32 instanceID, System.IntPtr nativeEventPtr, System.Boolean& result) (at <a0ba38a310dd46a2a6c6f1870dd04b1d>:0)


After update google app bundle package, these errors appear.
Thoes errors appear every second.

I'm using unity 20201.3.10.f1

 

I sovled it by myself. I closed the 'Secen window'. And updated firebase package.

 

This solved it for me.

 

What means 'secen window' ? Where is it ?

 

Scene window