phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 2006 MySQL server has gone away

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('bd0f1b315c9e5c35e8e6be19efb68d1f', -1, 1714023225, 1714023225, '12d9dc72', -4, 0, 0)

Line : 172
File : sessions.php