Facebook share throwing connection error when sharing -

every article on following website fails when attempting share page via share link in our social media widget.

for example:

the following page, http://news.gc.ca/web/article-en.do?mthd=index&crtr.page=1&nid=957389 when shared via following link:

returns error: connection error in share preview window. response headers request are:

cache-control: private, no-cache, no-store, must-revalidate content-encoding: gzip content-type: text/html date: wed, 01 apr 2015 14:22:20 gmt expires: sat, 01 jan 2000 00:00:00 gmt pragma: no-cache strict-transport-security: max-age=15552000; preload vary: accept-encoding x-content-type-options: nosniff x-fb-debug: iyvcjsrjjqvdvxyiubd1kvq6tezbilibrrcaczw9hi/ms+b2qsquq52kyu5820utflmuxtis3lbrol2bmlcvbw== x-frame-options: deny x-xss-protection: 0 x-firefox-spdy: 3.1  200 ok 

running above url through opengraph object debugger returns:

error parsing input url, no data cached, or no data scraped. 

and scraper sees following url:

document returned no data 

we need determine cause of since none of our content can shared our site @ moment.

any ideas, tips appreciated!