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 ('a52d0ab1f19775af11b2a25fccfc5b38', -1, 1764693523, 1764693523, 'd849d88b', 1, 0, 0)

Line : 187
File : sessions.php