Facebook sharer: Error parsing input URL, no data was cached, or no data was scraped

Question

Facebook share doesn't work for some URLs from my site.

The Facebook Opengraph debugger gives me the following "Error parsing input URL, no data was scraped" on this URL: http://geektimes.ru/post/241334/

But with this URL is OK: http://geektimes.ru/post/241330/

I can see both requests in server logs. Every request processed fine, but problem exists. Help please.

Answer 1

I've got an answer from Facebook support team:

The issue is originally caused by using a protocol relative url in og:image... Fix the url and you'll see this error go away.

This worked for me.