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 ('2df7ec2eb7cb476de88a21818a7036e2', -1, 1749251145, 1749251145, 'd849d80d', 2, 0, 0)

Line : 190
File : sessions.php