/var/www/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/AbstractMySQLDriver.php: 115 - An exception occurred while executing '            (SELECT DISTINCT page_namespace AS namespace, 'rev' AS type, page_title AS page_title,                page_len, page_is_redirect, rev_timestamp AS rev_timestamp,                rev_user, rev_user_text AS username, rev_len, rev_id             FROM `dewiki_p`.`page`            JOIN `dewiki_p`.`revision_userindex` ON page_id = rev_page                        WHERE  rev_user = '1481078' AND rev_timestamp > 1  AND rev_parent_id = '0'  AND page_namespace = '0'   AND page_is_redirect = '0'                         )            UNION            (SELECT a.ar_namespace AS namespace, 'arc' AS type, a.ar_title AS page_title,                0 AS page_len, '0' AS page_is_redirect, MIN(a.ar_timestamp) AS rev_timestamp,                a.ar_user AS rev_user, a.ar_user_text AS username, a.ar_len AS rev_len,                a.ar_rev_id AS rev_id             FROM `dewiki_p`.`archive_userindex` a            JOIN            (                SELECT b.ar_namespace, b.ar_title                FROM `dewiki_p`.`archive_userindex` AS b                LEFT JOIN `dewiki_p`.`logging_userindex` ON log_namespace = b.ar_namespace AND log_title = b.ar_title                    AND log_user = b.ar_user AND (log_action = 'move' OR log_action = 'move_redir')                WHERE  ar_user = '1481078' AND ar_timestamp > 1  AND b.ar_parent_id = '0'  AND ar_namespace = '0'  AND log_action IS NULL            ) AS c ON c.ar_namespace= a.ar_namespace AND c.ar_title = a.ar_title            GROUP BY a.ar_namespace, a.ar_title            HAVING  rev_user = '1481078'             )            ':SQLSTATE[HY000]: General error: 2013 Lost connection to MySQL server during query