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 ('5fb5e314b55389db22afc396c7d19e2b', -1, 1569016287, 1569016287, '23ab9210', 31, 0, 0, 31)

Line : 190
File : sessions.php