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 ('f6474c29ab43eaa46583b74daca0b404', -1, 1722051120, 1722051120, '03919a96', -7, 0, 0)

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