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 ('91243f08c8f1a0a3084fe2b02e161a84', -1, 1757934736, 1757934736, 'd849d828', 3, 0, 0)

Line : 187
File : sessions.php