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 ('313118e5be55877ad4d0551558348cb2', -1, 1722036553, 1722036553, '038a45a0', -4, 0, 0)

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