phpBB : Критическая ошибка

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) VALUES ('493bae7a27aab73501dd2ee48888294b', -1, 1531714781, 1531714781, '36e111ef', 0, 0)

Line : 158
File : sessions.php