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 ('b97d50b69d3e32467000fb1587c4e770', -1, 1757916431, 1757916431, 'd849d828', 6, 0, 0)

Line : 187
File : sessions.php