I’ve had several cases where one of the Kodi sqlite3 databases becomes corrupted on Coriander. It has happened to Textures, Addons and EPG at different times. The error that manifests in the Kodi log is The Database Disk Image is Malformed, and once it happens the log is full of this and transactions in the affected database don’t take place.
Did some reading, and discovered that usually you can dump the database, and the dump will be ok. Try this:
echo '.dump' | sqlite3 fred | sqlite3 new_fred
mv fred bad_fred
mv new_fred fred