Thousands of warning message for PlayerInput in DisplayPanelCloser

Where do you have your PlayerInput?
Here it is searching in the display panel owner gameobject.
 
Make sure you Player Object is set as the Panel Owner in the DisplayPanelManager component (On the Canvas)
 
There is absolutely no reason this should be called at edit time.
I see that in your console you have a warning about an MMEvent. Could they be related?

I tested it in my scene and I have no warnings, so I'm pretty sure it is something specific to your project, perhaps you haven't cleaned your event correctly, or you have a script calling update on that gameobject at edit time
 
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