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, session_admin) VALUES ('ac511aa0a909a801fb47c7a23a954146', -1, 1713516680, 1713516680, '340e8ebd', 5, 0, 0)

Line : 187
File : sessions.php