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 ('30ded15a79d8c9f7d7e21144413e9777', -1, 1766658585, 1766658585, 'd849d817', 1, 0, 0)

Line : 187
File : sessions.php