Doesn't pull the main image of the post if I insert a link to FaceBook?

Question

Facebook

From this site, http://www.journalist.today/facebook-share-test/if I take a link and put it in a post on my Facebook profile, the photo of the post does not pull. With what it can be connected?
In the head of each post is inserted something like this:

<meta property="og:title" content="Канада продолжит военную поддержку Украины"/>
<meta property="og:type" content="website"/>
<meta property="og:url" content="http://www.journalist.today/kanada-prodolzhit-voennuyu-podderzhku-ukrainy/"/>
<meta property="og:image" content=""/>
// иногда картинка пустая или там что -то вроде такого:
// content="http://www.journalist.today/wp-content/uploads/2016/11/платежки-отопление-1.jpg"
<meta property="og:image:width" content="200" /> 
<meta property="og:image:height" content="200" />
<meta property="og:site_name" content="ЖУРНАЛИСТ"/>
<meta property="og:description" content="Thanks for sharing!"/>

Answer 1

You have not written anywhere what picture it should take
Use the Open Graph Protocol.
https://habrahabr.ru/sandbox/28973/