The database table prefix has not been a default for some years now and can often cause issues with upgrades, we recommend removing the table prefix to reduce errors and improve stability of upgrades.
It is easy to do following these steps and a simple rename of tables should be quick:
- Enable phpmyadmin
mediacp phpmyadmin enable
- Login and select the "mediacp" database
- Scroll down, press "Check All"
- Click on the "With selected:" dropdown and select Replace table prefix"
- Enter "cc_" in the first field, leaving the second empty then pressing "Continue" to apply the change
- Open /usr/local/mediacp/htdocs/database.php and replace the
$db_prefix = 'cc_';
with$db_prefix = '';
and save the file