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 ('8585969f55f9c57a4d708e931e94688d', -1, 1763190671, 1763190671, 'd849d835', 1, 0, 0)

Line : 187
File : sessions.php