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 ('75bde7c85b9c621df8f2be8054d996e0', -1, 1569090058, 1569090058, '03e3fe0c', 0, 0, 0, 20)

Line : 190
File : sessions.php