Libgit2 Error ? Object not found-3 different errors of the same variant.

So i've been creating a short....ish animation for about 4-6 months now and all of it just gives errors, i had 3 other copies as backup but all of them say the same thing, i wonder if it's because i don't have creative cloud in sync (it was before but because im not an admin it just suddenly stoped working, i also have onedrive so it could be that ?....also to add even more injury i had to switch pc's, sooooo yea one more problem there, AND ONE MORE, my pc kept crashing suddenly...so basically all the thing's that should not be happening are literally coming all in one...) Any help ?