Google complains image missing or invalid itemtype
<p>No matter how I mark up the image, Google complains that the image is either missing or has an invalid itemtype.</p>

<pre><code>&lt;html itemscope itemtype="http://schema.org/Article"&gt;
 &lt;head&gt;
  ...
  &lt;link itemprop="image" href="https://www.example.com/image.jpg" /&gt;
 &lt;/head&gt;
 &lt;body&gt;
  &lt;img itemprop="image" src="https://www.example.com/image.jpg" /&gt;
 &lt;/body&gt;
&lt;/html&gt;
</code></pre>

<p>How do I add an image to an article?</p>