UEFN troubleshoot

can someone help me? i was working on my map and when I tried to launch a session, I couldn’t because of some verification errors. I then tried to fix the error, closed UEFN, and re-opened it, but when I did my map was gone, please help. I have all my files and everything in the content browser tap, it’s just not in the map itself.

Note: I already tried opening a different level and nothing works.

This happened to me too. But it’s a matter of time for your map to work again (i.e. it will fix itself, at least that was my case)

It got worse now, I tried undoing the check in and now all the files and assets are deleted. Someone pls help me