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 ('25b1ea132f2dec6d442ac2da255c0d3b', -1, 1769384101, 1769384101, 'd849d83e', 1, 0, 0)

Line : 187
File : sessions.php