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 ('43a3487e563f711f2a5b0fcad9ce3419', -1, 1722038210, 1722038210, '12e02bf5', -8, 0, 0)

Line : 172
File : /home/rebkell/public_html/boards/includes/sessions.php