package com.connfa.push;

import com.google.firebase.messaging.FirebaseMessagingService;
import com.google.firebase.messaging.RemoteMessage;

public class PushMessagingService extends FirebaseMessagingService {

    @Override
    public void onMessageReceived(RemoteMessage remoteMessage) {
        super.onMessageReceived(remoteMessage);
    }
}

package com.connfa.push;

import com.google.firebase.messaging.FirebaseMessagingService;

public class PushMessagingService extends FirebaseMessagingService {

    // Nothing to do here (for now)
}

Remove empty method from PushMessagingService