E/AndroidRuntime: FATAL EXCEPTION: TokenRefresher
      Process: com.example.ibrahimsahko.zee, PID: 20720
    java.lang.NoSuchFieldError: No static field
    PREFER_HIGHEST_OR_REMOTE_VERSION_NO_FORCE_STAGING of type
    Lcom/google/android/gms/dynamite/DynamiteModule$VersionPolicy; in
   class Lcom/google/android/gms/dynamite/DynamiteModule; or its
     superclasses (declaration of '
   com.google.android.gms.dynamite.DynamiteModule' appears in
   /data/app/com.example.ibrahimsahko.zee-2/base.apk)
    at com.google.android.gms.flags.FlagValueProvider.initialize(Unknown
    Source)
    at com.google.android.gms.flags.FlagRegistry.initialize(Unknown
    Source)
    at com.google.firebase.auth.internal.zzx.initialize(Unknown Source)
    at com.google.firebase.auth.internal.zzt.run(Unknown Source)
    at android.os.Handler.handleCallback(Handler.java:815)
    at android.os.Handler.dispatchMessage(Handler.java:104)
    at android.os.Looper.loop(Looper.java:207)
    at android.os.HandlerThread.run(HandlerThread.java:61)

public class FirebaseCloudMessagingService extends
     FirebaseMessagingService {

    @Override
    public void onNewToken(String s) {
    super.onNewToken(s);
   }

   }

FirebaseInstanceId.getInstance().getInstanceId()
        .addOnSuccessListener(new OnSuccessListener<InstanceIdResult>() {

           @Override

        public void onSuccess(InstanceIdResult instanceIdResult) {
        String deviceToken = instanceIdResult.getToken();

        firebaseFirestore.collection("Users")

        .document(userID).update("token_id", deviceToken)

     .addOnCompleteListener(new OnCompleteListener<Void>() {

        @Override

      public void onComplete(@NonNull Task<Void> task) {

      if(task.isSuccessful()){

      Intent toMain = new Intent(SignIn.this, MainActivity.class);

      toMain.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
      Intent.FLAG_ACTIVITY_CLEAR_TASK);

       startActivity(toMain);

      finish();

       Bungee.fade(SignIn.this);

      }else{

      Toast.makeText(SignIn.this,
      Objects.requireNonNull(task.getException()).getMessage(),
       Toast.LENGTH_SHORT).show();
            }
               }
              });
                }
                 });

classpath 'com.google.gms:google-services:4.0.1'