phpBB : Erro Crítico

Error creating new session

DEBUG MODE

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

INSERT INTO f_activesessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('6736472f17851ff274e4dc1e3a6d0adb', -1, 1769836489, 1769836489, 'd849d83b', -4, 0, 0)

Line : 187
File : sessions.php