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 ('2ebf24e7537b9f60a0bc6a9e0bec9736', -1, 1768338988, 1768338988, 'd849d89c', -4, 0, 0)

Line : 187
File : sessions.php