How to correct corrupt measures?

Musescore 4 recently notified me that my score was corrupt, and listed the spots:
Corrupted measure: Full score, measure 42, staff 7.
Corrupted measure: Full score, measure 44, staff 7.
Corrupted measure: Full score, measure 46, staff 7.
Corrupted measure: Full score, measure 48, staff 7.
Does anyone know how to fix these?

Even before the score was corrupt, I had trouble uploading it to the website, as it would say "Page not found" whenever I opened it. I think the corrupt measures might have something to do with this issue, but it might be entirely separate.

I tried following the directions on how to uncorrupt files, but I don't know what it means by deleting the parts- whenever I go to "parts," there's no option to delete them. I might just be very dumb, but I've been stuck on that. Plus, I have no idea what is exactly wrong with the measures, so I probably wouldn't be able to correct them anyways-