title: Flutter model_viewer plugin for iOS not showing anything
body: <p>I tried to build an AR app using Flutter and model_viewer plugin. It works just fine in Android but when I tried to test it using iOS it is just showing a blank page. I tried to follow the documentation provided in <a href="https://pub.dev/packages/model_viewer" rel="nofollow noreferrer">https://pub.dev/packages/model_viewer</a> by adding :</p>
  <pre><code>&lt;key&gt;io.flutter.embedded_views_preview&lt;/key&gt;
  &lt;true/&gt;
  </code></pre>
  <p>but nothing has changed.  Can you explain why?</p>