I updated the topic, however, the problem remained
Then why are so many classes hung on a single tag. How to understand that I do not use all these classes and remove superfluous?
 if I don’t use Brizy why does he hang in the body?
This is all good, but why is the DOM about 15,000 elements in size?
Using the allow-numeric-stubs plugin, I removed the “-2” from all the urls in which it was however there is one url where I removed the “-2″ but the page was not found (404 error) although all the others work correctly.
 There was also a mistake ”
 Error posting. Error message: The response is not a valid JSON response on only one page ”
 The screenshots show that with / 9001-2 the page is displayed, and when I put / 9001 it gives an error
 Please, could you see what the problem is hidden?
Solution for this topic
thanks
 I solved the problem using the plugin
 https://wordpress.org/support/plugin/allow-numeric-stubs/
thanks Everything is working now. Everything used to be fine, but now some kind of mistake
Thanks!
 Here is the login and password