Cannot convert Lightroom catalog: corrupt
Hello, I am trying to update to Lightroom Classic. However it cannot upgrade my catalog.

I reinstalled the previous version and it can open the catalog but if I try to optimize or repair it says it is corrupt and cannot be
repaired. I have many backups but all have the same problem. Is there a way to repair a corrupt catalog when Lr says it cannot
repair it?
I have over 130.000 images, losing it or not being able to upgrade would be a disaster... thanks!
Simone

