title: Ionic 5 capacitor unable to fileOpener
body: <p>I am using ionic 5 capacitor to open pdf file, which I receive as blob.</p>
  <pre><code>  downloadFile(data: Blob, fileName: string) {
  
      this.blob = new Blob([data], { type: 'application/pdf' });
      const reader = new FileReader;
  
      reader.onload = () =&gt; {
        console.log('3');
        var base64data = reader.result as string;
        // Save the PDF to the device
        try {
          Filesystem.writeFile({
            path: fileName,
            data: base64data,
            directory: FilesystemDirectory.Data,
            // encoding: FilesystemEncoding.UTF8
          }).then(() =&gt; {
            console.log('File Written');
            Filesystem.getUri({
              directory: FilesystemDirectory.Data,
              path: fileName
            }).then((getUriResult) =&gt; {
              console.log('getUriResult', getUriResult.uri);
              const path = getUriResult.uri;
              this.platform.ready().then(() =&gt; {
                this.fileOpener.open(path, 'application/pdf')
                  .then(() =&gt; console.log('File is opened'))
                  .catch(error =&gt; console.log('Error openening file', error));
              })
            }, (error) =&gt; {
              console.log('getUri', error);
            });
          });
        } catch (error) {
          console.error('Unable to write file', error);
        }
      }
      reader.readAsDataURL(this.blob);
  
    }
  
  </code></pre>
  <p>I am getting below mention error, when I run on real device</p>
  <pre><code>Msg: Native: tried calling FileOpener.open, but the FileOpener plugin is not installed.
  Msg: Install the FileOpener plugin: 'ionic cordova plugin add cordova-plugin-file-opener2'
  Msg: Error openening file plugin_not_installed
  </code></pre>
  <p>I have searched online same implementation, but for some reason it isn't working.</p>