Flarum encountered a boot error (Doctrine\DBAL\Driver\PDOException)<br />
            <b>SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name or service not known</b><br />
            thrown in <b>/var/www/forum.zhishiq.com/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOConnection.php</b> on line <b>31</b>