Sorry! The site is now available https://champion-official.ru . The JS Composer plugin breaks the site. When it is disabled, the main page loads. But errors in the work still remain.
You will have to find another plugin. You have not attached the screen. Usually, the problem occurs when the file exceeds the size allowed for the free version or if you use Goddady host.
Whichever error you have, you will have to find another plugin to transfer or contact your host support for the help as our support does not cover such an issue.