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 ('adce75f3d6e75563fb67d781a49b0a87', -1, 1634589373, 1634589373, '03eee858', -2, 0, 0)

Line : 187
File : sessions.php