title: Getting No JSON object could be decoded while using simplejson
body: <p>I'm accessing some data via an API.</p>
  
  <p>The following is my code snippet:</p>
  
  <pre><code>url = self.base_url + specific_url + "?q=" + str(query) + "&amp;" + "filters=[[%22category_id%22,[" + category_id + "]]]" + "&amp;start=" + start + "&amp;sortby=[[%22mpn%22, %22asc%22]]" + "&amp;limit=" + limit + "&amp;apikey=" + self.api_key
  response_json = self.web_fetch(url)
  return simplejson.loads(urllib.unquote(response_json))
  </code></pre>
  
  <p>When I go to the URL directly, I can see the data fine. But in my code 'm getting the following error:</p>
  
  <pre><code>No JSON object could be decoded
  </code></pre>
  
  <p>I started getting this error when I added <code>&amp;sortby=[[%22mpn%22, %22asc%22]]</code> to the url but I am able to navigate to the page fine in my browser so not sure if that's causing the problem or not.  </p>
  
  <p>What would cause this error and what are things I can try to fix it?</p>