title: MissingPluginException(No implementation found for method file on channel video_thumbnail)
body: <p>I am using <a href="https://pub.dev/packages/video_thumbnail" rel="noreferrer"><code>video_thumbnail 0.2.4</code></a> package to get thumbnail form video url. If I uploaded video from android device then its working perfect but If I used iPhone device, Always get the error</p>
  <blockquote>
  <p><code>MissingPluginException(No implementation found for method file on channel video_thumbnail)</code></p>
  </blockquote>
  <p>I'm using <code>Firestore</code> as backend and using <code>Firebase Storage</code> for store my video/photos. Below are my code. Url is correct and video playing in the browser.</p>
  <pre><code>Future&lt;String&gt; thumbnailImageFromVideoUrl(String url, String feedID) async {
      try {
        String filePath = _strDirectoryPath + &quot;/&quot; + feedID + '.png';
        print(&quot;filePath -- $filePath&quot;);
        print(&quot;videoURL -- $url&quot;);
        return await VideoThumbnail.thumbnailFile(
          video: url,
          thumbnailPath: filePath,
          imageFormat: ImageFormat.PNG,
          maxHeight: 240,
          quality: 50,
        );
      } catch (e) {
        print(&quot;Video Thumbnail Error: $e&quot;);
        return null;
      }
    }
  </code></pre>
  <p>Kindly help me on this case.</p>