I use Gavick template News 2 and I have the latest version of K2 and Joomla.

When I click in article to share it on Facebook, they debugger told me Error parsing input URL, no data was cached, or no data was scraped..
When I click to fetch new scrape information, it is not showing me a picture.
Here is an exampe of URL goo.gl/NZvv6a.

Any ideas?

Hello, the og: tags tags are wrong in your site.
Note the double url.
This is probably caused by an performance extension. Try disabling these extensions one by one to see if the issue is solved.