Build failed due to use of deprecated Android v1 embedding“ when building Flutter app

You need to change the android\app\src\main\AndroidManifest.xml file.

From :

<application
    android:name="io.flutter.app.FlutterApplication"
    ...

To :

<application
        android:name="${applicationName}"
        ...

add this three lines if doesn’t exist :

<meta-data
        android:name="flutterEmbedding"
        android:value="2" />
          ...

This is used by the Flutter tool to generate GeneratedPluginRegistrant.java.