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 ('2e61aa66ae60b6b2563f88b91e022bcc', -1, 1767608502, 1767608502, 'd849d87f', -4, 0, 0)

Line : 187
File : sessions.php