title: Why does pandas.json_normalize(json_results) raise a NotImplementedError?
body: <p>I have a json variable named <code>json_results</code> and I am running <code>pandas.json_normalize(json_results)</code>. It raises the following error:</p>
  <pre class="lang-none prettyprint-override"><code>in _json_normalize
      raise NotImplementedError
  NotImplementedError
  </code></pre>
  <p>How can I resolve this?</p>