phpBB : Kritična greška

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, session_forum) VALUES ('a9823e8fd4923bbe32d2a2931ed5c9be', -1, 1568809925, 1568809925, '12cec253', 11, 0, 0, 0)

Line : 190
File : sessions.php