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 ('b8a80eecf77d1faa159d3b5b3a551ea3', -1, 1722038158, 1722038158, '03858246', 12, 0, 0)

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