title: Icons not showing in Ionic application
body: <p>I'm getting an issue with Ionic icon. I am using Ionic 4 and Angular 8, trying to add QR code icon, without luck.</p>
  <p>I am using Ionic doc: <a href="https://ionicons.com/" rel="nofollow noreferrer">https://ionicons.com/</a>
  </p>
  <pre><code>&lt;ion-menu-toggle auto-hide=&quot;false&quot;&gt;
         &lt;ion-item (click)=&quot;scanBarcode()&quot;&gt;
            &lt;ion-icon name=&quot;qr-code-outline&quot; slot=&quot;start&quot;&gt;&lt;/ion-icon&gt;
              &lt;ion-label&gt;
                  Scan QR
              &lt;/ion-label&gt;
         &lt;/ion-item&gt;
  &lt;/ion-menu-toggle&gt;
  </code></pre>