Hi @Turkish19974005,
There have been a few posts about the logbook crashing. Even when not using the A320NX mod.
Search results for ‘logbook crash’ - Microsoft Flight Simulator Forums
There’s also a wishlist to remove the logbook popup that you may want to up vote and contribute to:
https://forums.flightsimulator.com/t/logbook-should-not-pop-up-in-the-middle-of-the-shutdown-procedure/178798