I can't open my Photos Library on iMac post updating to macOS 15.1
Just updated my c2019 27" iMac to Mac OS 15.1 and now when I try to open Photos I get a "Can't open Photos library" message. I've tried the Photos Repair, but nothing works; it continues to complain that it can't open the library. I've also tried to copy a previous version of the Photos library from my Time Machine backups but Time Machine also seems to be stuck. I've gotten a "Preparing to copy to Pictures" for over an hour now. I've got 65GB of pictures in that library. Help!
[Re-Titled by Moderator]
iMac 27″, macOS 15.1