Why is the Facebook share button not working?

Question

Social media

I connected the share buttons to the site - from Yandex .
Until today, everything was fine, today I decided to make open graph markup and found that the share button on Facebook does not work - the rest all work.
I thought maybe because of the markup - I deleted it, it did not help.
When you click on the share button, a window starts popping up... half a second... and it closes...
What could be the matter?

Answer 1

here is a description of the problem and how to deal with it
https://stackoverflow.com/questions/18015464/faceb...