title: Multiple queries error in Gatsby "Multiple "root" queries found"
body: <p>To create the post template through this tutorial(I'm in part 4):
  <a href="https://www.joaopedro.cc/blog-com-gatsby-e-react-parte-4" rel="nofollow noreferrer">https://www.joaopedro.cc/blog-com-gatsby-e-react-parte-4</a></p>
  <p>But when doing the &quot;PostPage&quot; query an error is occurring:</p>
  <pre><code>Multiple &quot;root&quot; queries found: &quot;PostPage&quot; and &quot;PostPage&quot;.
  Only the first (&quot;PostPage&quot;) will be registered.
  
  Instead of:
  
  1 | query PostPage {
  2 |   markdownRemark {
  3 |     #...
  4 |   }
  5 | }
  6 | 
  7 | query PostPage {
  8 |   markdownRemark {
  9 |     #...
  10 |   }
  11 | }
  
  Do:
  
  1 | query postPageAndPostPage {
  2 |   markdownRemark {
  3 |     #...
  4 |   }
  5 |   markdownRemark {
  6 |     #...
  7 |   }
  8 | }
  </code></pre>
  <p>I've looked at other answers to similar questions, and from what I understand it was a case sensitive issue, but from what I see, everything is looking correct.</p>
  <p>I'm not getting out of place. :( thanks in advance!</p>