Big Sur Photos Upgrade
I decided to leave the land of 32-bit applications yesterday so I updated Mojave -> Big Sur (skipping Catalina altogether because System Update didn't list it as an option).
I took a few hours to download and install, but there were no irregularities.
When I opened Photos, it wanted to update the library (of 40K+ photos) which took a few more hours. After it finished the upgrade, it started examining the photos and the progress bar has stopped about 25% complete. It keeps cycling between: Detecting Duplicates, Curating Best Photos, etc.)
It's been doing this for over 18 hours.
What do I do?
iMac 27″, macOS 11.6