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 ('a5c59cab0be66e107ae1e5bc5fb30c81', -1, 1722041383, 1722041383, '0387b7be', 0, 0, 0)

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