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 ('2ac8bbe366e2405ef528c63c65edbe29', -1, 1722037554, 1722037554, '0395eeef', -1, 0, 0)

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