Photos app can't find original files.
I have a Mac mini M2 and just updated to Sequoia when the Photos app started to have problems. Even new added photos can't be viewed or edited because of a warning saying the original photo can't be found. If I'm in the thumbnails mode and select "find referred file in Finder", it is always found. But for some reason the link between the thumbnail in Photos and the original is broken. All my photos are referred in the app, I don't want too many copies around. This has never been a problem before. The library has not been moved, it and the photos are on the same external disk. If I start in safe mode the problem is gone, but it comes back after restart.
Mac mini (M2, 2023)