UE4.27 Project crashes when opening any blueprint

Recently (and randomly) I found I can no longer open any blueprint without getting an immediate crash. I thought it might have been my player character but I’ve swapped it with many backups and none worked. I tried opening other blueprints that don’t reference the player and still, crash. All other assets still open fine (materials, skeletons, etc.) but my project won’t open blueprints. I’m a year into a project and I really don’t want to start from scratch. Does anyone have any ideas where to start?