Strange facebook warning of URL being unreachable

I use social plugin for Facebook comments. Nothing unusual initially. However after migrating to new hosting provider, I started to see the tiny Facebook warning under the comment box. It say something about the URL being unreachable.

I tried few things, to the extend that I change to another hosting provider for this sake (because I read somewhere that might be due to the server blocking robots from Facebook from fetching the content).

I never thought that it was due to the meta content that Facebook is looking for.

Just add og:title, og:image, og:type and og:url then the “unreachable” problem gone.

Hope this help those who are facing the same issue as this.

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  1. Heidi 13/02/2014 at 3:28 pm

    OK never mind, I figured it out. My image file in the og:image was not large enough for Facebook 🙁

  2. Heidi 13/02/2014 at 2:44 pm

    Thank you for this information, but I’m a bit confused – Where do you add this?
    you mean like:

    Can you tell me where it is supposed to go in wordpress? Thank you.


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