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 ('95d6ac61d3ca1654b22a5e5b041e0a24', -1, 1714023814, 1714023814, '030c296a', 5, 0, 0)

Line : 187
File : sessions.php