Editor crashes when using "Open Level" blueprint - only for a specific level

For some reason the editor crashes whenever I use the “open level” blueprint. The level itself is my main menu, and opening it normally (open the level in editor, launch game, not standalone) works just fine, but returning to it from a different level causes the editor to crash.

The main menu level is only a widget, and if I launch a standalone game it can open it from a different level so it seems like it’s something with the editor. I’m just wondering what would cause this and if there’s a fix. I’ve switched that blueprint to open a different level and it works problem-free. There’s only a problem when I try to open that one specific level.

Crash Report

I think the problem was that the moon was in the wrong phase or something, it works now.

Un/Reinstalling the engine might have fixed it too.