There is a starting level, which is by default when you start the project, crashes

everything was fine, but at one point it began to crashed. There is a starting level, which is by default when you start the project, crashes. If you remove everything from the level and everything from the level blueprint, it still crashes, if you create the same level from zero, add everything in turn, then at once starts to crashes out and rollback does not help. You can get to the initial level only through other default level, I change it in the Default_Engine file (default_map)
Logs for crash below
Thanks for help!

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Thanks