How long to compact, and why no logging? Is it stuck?

-rw-------. 1 root root 233472 2021-07-29 10:20:00.149070786 -0400 Duplicati-server.sqlite
-rw-------. 1 root root 18098118656 2021-07-29 02:34:19.850664721 -0400 MYFGVUULA.sqlite

This is quite a large database. You might want to try a VACUUM operation to see if that helps. Make sure that you have at least 2x the database size in free space in your temporary directory before doing so.