[Thu Nov 28 12:51:39.939359 2019] [php7:error] [pid 5518] [client 193.174.193.61:44378] PHP Fatal error:  Uncaught PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away in /var/www/subdomain.domain.tld/html/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php:117\nStack trace:\n#0 /var/www/subdomain.domain.tld/html/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php(117): PDOStatement->execute(Array)\n#1 /var/www/subdomain.domain.tld/html/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Connection.php(1056): Doctrine\\DBAL\\Driver\\PDOStatement->execute(Array)\n#2 /var/www/subdomain.domain.tld/html/lib/private/DB/Connection.php(216): Doctrine\\DBAL\\Connection->executeUpdate('UPDATE `oc_file...', Array, Array)\n#3 /var/www/subdomain.domain.tld/html/lib/private/Lock/DBLockingProvider.php(227): OC\\DB\\Connection->executeUpdate('UPDATE `oc_file...', Array)\n#4 /var/www/subdomain.domain.tld/html/lib/private/Lock/AbstractLockingProvider.php(122): OC\\Lock\\DBLockingProvider->releaseLock('files/f6d84a4c2...', 2)\n#5 /var/www/subdomain.domain.tld/html/lib/private/Lock/DBLockingProvider.php(293): OC\\Lock\\AbstractLockingProvider->release in /var/www/subdomain.domain.tld/html/3rdparty/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php on line 106