Lighroom closed on its own

Lightroom V13.4 is spontaneously shutting down.  The first few times I just reopened it and continued on my project.  This last time all my work was lost!  I had 735 images of the 3300 shot all ranked and edited and all 5 days of work are gone.  How can I recover my work?

The only file affected was the one I had open.  All others from prior shoots are intact.

[Moved from ‘Bugs’ to ‘Discussions’ by moderator, according to forum rules. A ‘bug’ is not just another word for a problem with software.]