Useless people with many diplomas seems to have immediate effect to decisions and standards of many things like coding, to be more precise, html coding.

And even more useless people watching the previous group of people thinking how great they are with all these diplomas, PHD and other 3-4 or more letters titles, and they decide to enforce anything the diplomas people say.

So, one …….. person from the Greek government, run the https://achecks.org/achecker →WCAG 2.1 AA test to one of my website and decide that 98% will not cut it.

The “ERROR” was “Document should have one main landmark” and the line of error was at the html tag, at the very top
 

The checker in order to pass with 100% the site, wanted from that tag to have a role.
The role attribute must be set to main.

<html class="js" lang="en" role="main">

In a wordpress environment, adding such attribute may be tricky.
If you have a child theme you can directly enter the role at the top of the header.php file.

With Divi you just need to enter the following code at the “Add code to the < head > of your blog”

<script>
 document.documentElement.role = "main";
</script>

It must look like this:

Hope that helps.