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 ('dd970b458ee695302741e5cf6ea766d8', -1, 1539673058, 1539673058, '36a6829d', 0, 0)

Line : 158
File : sessions.php