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 ('1796b67ff55c8f2ad2eb8150c9f3df84', -1, 1714253973, 1714253973, '03905d49', 6, 0)

Line : 158
File : sessions.php