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 ('362ce2dcf03bdd03ea1a51986d8613a8', -1, 1767607471, 1767607471, 'd849d87f', 8, 0, 0)

Line : 187
File : sessions.php