title: Absinthe result has all null values
body: <p>I'm totally new to Elixir, Phoenix, and Absinthe...so go easy on me. :)</p>
  <p>I'm experimenting with a graph database called <a href="https://dgraph.io/" rel="nofollow noreferrer">Dgraph</a> using a library called <a href="https://github.com/liveforeverx/dlex" rel="nofollow noreferrer">Dlex</a>. I've written a simple query designed to look up and return a list of users (I only have two users at the moment):</p>
  <pre><code>def list_users() do
    query = &quot;&quot;&quot;
      {
        users(func: type(User)) {
          uid
          email
          name
        }
      }
    &quot;&quot;&quot;
  
    {:ok, %{&quot;users&quot; =&gt; result}} = Dlex.query(:dlex, query)
  
    IO.inspect(result)
  
    {:ok, result}
  end
  </code></pre>
  <p>The output from <code>IO.inspect(result)</code> is precisely what I expect and want—a list of my two users:</p>
  <pre><code>[
    %{&quot;email&quot; =&gt; &quot;rob@example.com&quot;, &quot;name&quot; =&gt; &quot;Rob&quot;, &quot;uid&quot; =&gt; &quot;0x1&quot;},
    %{&quot;email&quot; =&gt; &quot;bridget@example.com&quot;, &quot;name&quot; =&gt; &quot;Bridget&quot;, &quot;uid&quot; =&gt; &quot;0x2&quot;}
  ]
  </code></pre>
  <p>However, when I run this query with GraphiQL, all the values in the result are <code>null</code> for some reason:</p>
  <pre><code>{
    &quot;data&quot;: {
      &quot;users&quot;: [
        {
          &quot;email&quot;: null,
          &quot;name&quot;: null,
          &quot;uid&quot;: null
        },
        {
          &quot;email&quot;: null,
          &quot;name&quot;: null,
          &quot;uid&quot;: null
        }
      ]
    }
  }
  </code></pre>
  <p>Any idea what I'm doing wrong?</p>