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 ('e95adbf2872bcd1e8241ac4d13ca5c40', -1, 1769754513, 1769754513, 'd849d83b', 1, 0, 0)

Line : 187
File : sessions.php