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 ('4821ffd6b9d433cdeb9f3d37b821f660', -1, 1730415317, 1730415317, '03900797', -1280, 0, 0)

Line : 195
File : sessions.php