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 ('e59a6d35a9f3f040dee093273a9c92ca', -1, 1762160762, 1762160762, 'd849d885', 7, 0, 0)

Line : 187
File : sessions.php