title: FB exchange token api missing redirect_uri
body: <p>I am using the FB exchange token api like this :</p>
  
  <pre><code>https://graph.facebook.com/oauth/access_token?client_id={client_id}8&amp;amp;client_secret={client_secret}}&amp;amp;grant_type=fb_exchange_token&amp;amp;fb_exchange_token={one_hour_token}&amp;amp;redirect_uri=http%3A%2F%2Fotagz.cloudfoundry.com%2FfacebookCallback
  </code></pre>
  
  <p>I am getting the following error :</p>
  
  <blockquote>
    <p>"message": "Missing redirect_uri parameter.,
          "type": "OAuthException",
          "code": 191</p>
  </blockquote>
  
  <p>I have my application URL : otagz.cloudfoundry.com</p>
  
  <p>I know there is another question on the subject but there is no solution to it and it is from 2010.</p>
  
  <p>Does anybody know what's wrong with the redirect_uri?</p>
  
  <p>Thanks,
  Cristian</p>