Hi, got a similar if not the same problem.
Noticed that my mysql-based data source is not properly read after a reboot.
However, on the same client I have another profile running which does not use the mysql db, though the same network share. That profile is intended for our children, there's no need for that to "sync" its state via the mysql-db.
So, from what I see the error happens every time I reboot libreelec on the oDroid C2 (will test VIM within the next few days, but don't expect anything different there...), but when I log in to the profile without the mysql setup "and" then log back into the main profile using the mysql-db, it works.
Either there's an issue with the initial mysql-db connection after reboot "or" there's an issue with accessing the actual network share "after" connecting to the mysql-db.
Haven't checked logs yet, just installed everything yesterday evening, cannot sleep right now for whatever reason and thought I'd look up how to fix that, so I stumbled over this thread. Seems to match ...
One note though: I imported the video library from another installation, I did not add the actual network share as source...