Flutter - Not opening join whatsapp group

Question

I have a webView that contains links to join a whatsapp group and in chrome is working, but when I run the flutter app (iOS and Android) is not prompting the whatsapp App it says looks like you do not have whatsapp installed.

What I'm missing? I have this on my webview :

WebView(
                  javascriptMode: JavascriptMode.unrestricted,
                  initialUrl: 'https://myWeb',
                  onWebViewCreated: (controller) {
                    this.controller = controller;
                  },
                  navigationDelegate: (NavigationRequest request) async {
                    print(request.url);
                    if (request.url.startsWith('whatsapp://chat')) {
                      await _launchURL(request.url);
                    }
                  },
                ),

....

_launchURL(String url) async {
  if (await canLaunch(url)) {
    await launch(url);
  } else {
    throw 'Could not launch $url';
  }
}

I had to use this launch because otherwise it was showing a message as "can not open whatsapp://..."

I've added on manifest.xml

<queries>
  <!-- If your app opens https URLs -->
  <intent>
    <action android:name="android.intent.action.VIEW" />
    <data android:scheme="https" />
  </intent>
  <!-- If your app makes calls -->
  <intent>
    <action android:name="android.intent.action.DIAL" />
    <data android:scheme="tel" />
  </intent>
  <!-- If your sends SMS messages -->
  <intent>
    <action android:name="android.intent.action.SENDTO" />
    <data android:scheme="smsto" />
  </intent>
  <!-- If your app sends emails -->
  <intent>
    <action android:name="android.intent.action.SEND" />
    <data android:mimeType="*/*" />
  </intent>
</queries>

And in info.plist

<key>LSApplicationQueriesSchemes</key>
      <array>
        <string>https</string>
        <string>http</string>
      </array>