title: Facebook Graph API giving an unknown OAuthException
body: <p>When I send a request to <a href="https://graph.facebook.com/me/home?access_token=" rel="noreferrer">https://graph.facebook.com/me/home?access_token=</a><i>(access code goes here)</i> Facebook gives me this error message:</p>
  
  <pre><code>{
     "error": {
        "type": "OAuthException",
        "message": "An unknown error has occurred."
     }
  }
  </code></pre>
  
  <p>Every other API call works. If anybody knows anything about this issue, please help me.</p>