Didn't find class "io.appwrite.NotificationHandler" Flutter FCM Firebase

D/AndroidRuntime( 9095): Shutting down VM
E/AndroidRuntime( 9095): FATAL EXCEPTION: main
E/AndroidRuntime( 9095): Process: online.karsmiths.madhurusers, PID: 9095
E/AndroidRuntime( 9095): java.lang.RuntimeException: Unable to create service io.appwrite.NotificationHandler: java.lang.ClassNotFoundException: Didn't find class "io.appwrite.NotificationHandler"```

<service android:name="io.appwrite.NotificationHandler" android:exported="false">
      <intent-filter>
        <action android:name="com.google.firebase.MESSAGING_EVENT" />
      </intent-filter>
    </service>
``` added inside  the <application ........./>