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 ('2902169021edb115c8b68b1c21a8f41e', -1, 1714718789, 1714718789, '03909ad0', -9, 0)

Line : 158
File : sessions.php