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 ('07d7e4fb20e61afbe25e307f1fb82a8f', -1, 1722041609, 1722041609, '038d0782', 0, 0, 0)

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