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 ('8619ba3da0feb141f7d758ad9d8b5059', -1, 1722067881, 1722067881, '12740829', -7, 0, 0)

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