Website Critical Error

Error doing DB query userdata row fetch

DEBUG MODE

SQL Error : 2006 MySQL server has gone away

SELECT u.*, s.* FROM phpbbfm_sessions s, phpbbfm_users u WHERE s.session_id = '60d5db60101c54e7d9b96943aed0af9c' AND u.user_id = s.session_user_id AND session_time > 1714470240

Line : 358
File : sessions.php