title: fix facebook like plugin error "Sorry, this feature isn't available right now"
body: <p>I'm trying to put several like buttons in my website using <a href="https://developers.facebook.com/docs/plugins/like-button/" rel="nofollow">https://developers.facebook.com/docs/plugins/like-button/</a> .</p>
  
  <p>When I press them in my website, the button's "like" caption turns to "error".
  It WORKS okay in the preview on facebook developers.</p>
  
  <p>When I click the error, a pop-up is opened and it's saying:
  "Sorry, this feature isn't available right now: We're working on this issue and will have it fixed soon. Check the Known Issues on Facebook page for more information."
  This has been appearing for hours!</p>
  
  <p>What is this error about? Is my website blocked?</p>