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 ('6cf970354be97e49d84df95d83874c99', -1, 1711710958, 1711710958, '2cdee10c', -4, 0, 0)

Line : 187
File : sessions.php