How to remove 302 redirect when requesting a non-existent page?

Question

Yandex

I Webmaster gives an error:
Probably, the site is incorrectly configured to return the HTTP code 404 Not Found, which may adversely affect the indexing of the site by the robot. Configure a 404 return code to request non-existent pages.
The 404 page works correctly. 302 redirect did not create.
Platon Shchukin replied: "If you try to visit a page at any random address on your site, such a page will perform a 302 redirect to another page on the site."
How to fix the error?

Answer 1

hire an admin to check the directives
and see the headers yourself