Forum Post on Hompage not displayed

hello with me the forum posts are no longer displayed on the homepage.

I hadn't made any changes to the block, etc.

How do I get the forum post displayed again?

Hello amandus!

It looks like there is some AJAX error in your site. Please PM me the admin access for your site.

UPDATE:

In this case, all requests from the server to itself were closed. It has been fixed via the adding to file /etc/hosts (required root access) the line like:

127.0.0.1 [domain name]

by the hosting support.