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 ('84d9c9becdb4d035c9bf69bb59602a37', -1, 1526871499, 1526871499, '36c45659', 0, 0)

Line : 158
File : sessions.php