Accidentally did something wired when using inspect

Site URL: https://ray-cone-ap64.squarespace.com/

So i was working on Chrome (inspect) and i have no idea what I have done but my SS backend page went from inspect to a white screen. I can see every other page I search and open but not SS

Any ideas how to reset (inspect) so I can get back to work. I have deleted and reinstalled Chrome. Deleted history and cleared cache.

Is it just the inspector window that has gone white? Can you provide a screenshot?