title: OverflowError: Unsupported UTF-8 sequence length when > encoding string
body: <p>Inside a Twisted Resource, I am returning a json encoded dict as the response var below. The data is a list of 5 people with name, guid, and a couple other fields less than 32 characters long each, so not a ton of data.</p>
  
  <p>I get this OverflowError exception pretty often, but I don't quite understand what the unsupported utf-8 sequence length refers to.</p>
  
  <pre><code>self.request.write(ujson.dumps(response))
  </code></pre>
  
  <blockquote>
    <p>exceptions.OverflowError: Unsupported UTF-8 sequence length when
    encoding string</p>
  </blockquote>