Upgrade 10.14.0

Error Im getting:

Doctrine\DBAL\Exception\ConnectionLost: An exception occurred while executing ‘INSERT INTO oc_appconfig (appid,configkey,configvalue) SELECT ?,?,? FROM oc_appconfig WHERE appid = ? AND configkey = ? HAVING COUNT(*) = 0’ with params [“core”, “oc.integritycheck.checker”, “”, “core”, “oc.integritycheck.checker”]:

SQLSTATE[HY000]: General error: 2006 MySQL server has gone away

Looks like your mysql server is not running, as the error message said. Restart might help.