title: The asset "image.jpg" is not present in the asset pipeline
body: <p>I am trying to follow Agile development using rails 5.0 book. There I have loaded images inside <code>app/assets/images</code> directory manually just as told in the book. </p>
  
  <p>Following is the line where it is showing error.</p>
  
  <pre><code>      &lt;%= image_tag(product.image_url, class: 'list_image') %&gt;
  </code></pre>
  
  <p>As I mentioned I loaded images called for ex <code>image.jpg</code>, and it throwing </p>
  
  <p><strong>ActionController exception caught</strong></p>
  
  <p><strong>Sprockets::Rails::Helper::AssetNotFound in Products#index</strong></p>
  
  <p><code>The asset "image.jpg" is not present in the asset pipeline.</code></p>
  
  <p>When I checked in db seeded there is a image with url <code>image.jpg</code> but it is throwing error.</p>