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 ('c178173257a2bbf9774231f9882315cf', -1, 1762211592, 1762211592, 'd849d892', -9, 0, 0)

Line : 187
File : sessions.php