title: How to fix Facebook Circular Redirect?
body: <p>I have a page that redirects to another page
  I'm trying to test my url on:
  <a href="https://developers.facebook.com/tools/debug" rel="noreferrer">https://developers.facebook.com/tools/debug</a></p>
  
  <p>I get this error:</p>
  
  <pre><code>Errors That Must Be Fixed:
  Circular Redirect:‎ Circular redirect path detected (see Redirect Path section for details).
  
  Warnings That Should Be Fixed:
  ‎The og:url property should be explicitly provided, even if a value can be inferred from other
  tags.‎
  </code></pre>
  
  <ol>
  <li>How can I fix this problem?</li>
  <li>How to detect Facebook and, if it is Facebook, don't redirect?</li>
  </ol>