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 ('a9fd5b5bd1a0b48486e5171aac58e8da', -1, 1722036241, 1722036241, '0395eeef', -8, 0, 0)

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