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 ('ed190ce2f7bf54bee31c1573162b414e', -1, 1722041507, 1722041507, '12e02c15', -1, 0, 0)

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