Could not retrieve data from URL?

[Chhaya]

When I add a link from my blog into Facebook page, the post no longer contains images or metadata from the post.

Help me to try to solve this problem friends..

[ecozaar]

It looks like you have some sort of rule in your server configuration file that is serving empty content to the Facebook crawler. Check your .htaccess file and server logs to see what is going on here.

Once you fix this, you'll most likely still have issues. The Facebook parser is pretty strict and you have some major problems with your XHTML.

[dilipcybex]

Are you using a standard CMS ? If yes, make sure some plugins have not messed up with the structure

https://wellbuildyourblog.com/facebook-link-preview-load-fix/

The link above gives a working solution for the issue