title: Twitter Cards: "No card found (Card Error)"
body: <p>On Twitter, I can't show an image card when tweeting my website <a href="https://startcrowd.club" rel="noreferrer">https://startcrowd.club</a>
  But it works perfectly on Facebook. </p>
  
  <p>I want to show this card: <a href="http://startcrowd.club/images/startcrowdimage.jpg" rel="noreferrer">http://startcrowd.club/images/startcrowdimage.jpg</a></p>
  
  <p>I tried <a href="https://cards-dev.twitter.com/validator" rel="noreferrer">https://cards-dev.twitter.com/validator</a> and I got:</p>
  
  <blockquote>
    <p>INFO:  Page fetched successfully<br>
    INFO:  9 metatags were found<br>
    ERROR: No card found (Card error)</p>
  </blockquote>
  
  <p>The relevant metatags on my page <a href="https://startcrowd.club/index.html" rel="noreferrer">https://startcrowd.club/index.html</a> are:</p>
  
  <pre class="lang-html prettyprint-override"><code>&lt;meta http-equiv="Content-Type" content="text/html; charset=UTF-8"&gt;
  &lt;meta property="og:image" content="images/startcrowdimage.jpg"&gt;
  </code></pre>
  
  <p>The documentation I followed is:</p>
  
  <p><a href="https://dev.twitter.com/cards/getting-started" rel="noreferrer">https://dev.twitter.com/cards/getting-started</a></p>