phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('8b4ee3f7be653e91a8f81f1751f28925', -1, 1714395949, 1714395949, '03951bca', -7, 0)

Line : 158
File : sessions.php