Server can not find my libraries

Server Version#:1.43.2.10687
Player Version#:4.159.0

After a server crash, I needed to rebuild my plex install. Luckily the disks with the libraries are intact and undamaged. After the reinstall, nothing I do can get the server to scan the directories with the files. I’ve check all the permissions, check the db integrity and now I’m at a dead end

When the scan runs, the only log message of note is “Marking media not available in ”.

I’d very much appreciate any suggestions