phpBB : Критическая ошибка

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('6accd96003657d3985991b8d199f516d', -1, 1534469262, 1534469262, '36c660c6', 8, 0)

Line : 167
File : sessions.php