Check out this URL: https://developers.facebook.com/tools/debug/og/object?q=www.linuxstall.com

Everything is fine except the last line which is

Note: “Reference in Perl” is the most recent post at my site.

When I share any of my post on facebook then it works fine but when I share the homepage (https://www.linuxstall.com) then it shows most recent post’s description instead of the site’s description.

What is the reason of that? How can I correct that?

I have configured open graph using YOAST.

Check out this screenshot https://i.stack.imgur.com/GTqhj.png

It is showing reference in Perl as description instead of the site’s description.