You dont have any debugging symbols Help

I need quick help with something really stupid. I copy pasted some blueprint stuff from one level blueprint from the other. Then when I tried to open the level I copied from, the engine crashes and I get a message saying

“You do not have any debugging symbols required to display the callstack for this crash.”

I am going to release a project this monday, so I DONT HAVE TIME FOR THIS!

Please help

uninstall the launcher and the game turn off your anti virus and reinstall basically your pc removed the file