In some static pages generated ,but some static pages don't generated . This is a subdomain, so it is optional to generate IV for subdomain. But if the IV generated for subdomain, it must work properly. All static and essential pages of subdomain must generate IV. The structure of subdomain differs from the original domain, so it is better not to generate IV for the subdomain. Look at :https://instantview.telegram.org/contest/bombardir.ru/template32/issue1/