El campo de valor de Cadena # no está presente en las versiones de Android> = 6.0

Estoy creando una aplicación como Uber, pero me he encontrado con un problema después de que recibí un error de repente y la aplicación se bloqueó. Probé muchas formas para evitar este error, pero no funcionó. Todas las respuestas a las preguntas similares que pude encontrar en Stackoverflow fueron que este problema se debe aFirebaseDatabase.getInstance().setPersistenceEnabled(true) y tuve que eliminar este código de línea ya que este es un error con Firebase que aún no se ha resuelto. Pero esto no resolvió mi problema, ya que no tenía ese código. Es por eso que pensé que esta es una pregunta que no está en stackoverflow y formulé la pregunta. Este es mi código Java

package com.matt.autozauser;

import com.directions.route.AbstractRouting;
import com.dir,ections.route.Route;
import com.directions.route.RouteException;
import com.directions.route.Routing;
import com.directions.route.RoutingListener;
import com.firebase.geofire.GeoFire;
import com.firebase.geofire.GeoLocation;
import com.firebase.geofire.GeoQuery;
import com.firebase.geofire.GeoQueryEventListener;
import com.google.android.gms.common.GooglePlayServicesUtil;
import com.google.android.gms.location.LocationListener;
import com.google.android.gms.location.LocationServices;
import com.google.android.gms.location.places.ui.PlaceAutocomplete;
import com.google.android.gms.location.places.ui.PlaceAutocompleteFragment;
import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.model.BitmapDescriptorFactory;
import com.google.android.gms.maps.model.LatLng;

import android.Manifest;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationManager;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v4.app.ActivityCompat;
import android.support.v4.app.FragmentActivity;
import android.os.Bundle;
import android.support.v4.content.ContextCompat;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.OnMapReadyCallback;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.Marker;
import com.google.android.gms.maps.model.MarkerOptions;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

public class Welcome extends FragmentActivity implements OnMapReadyCallback,
        GoogleApiClient.ConnectionCallbacks,
        GoogleApiClient.OnConnectionFailedListener,
        LocationListener{

SupportMapFragment mapFragment;

private Button btnBooking;
private Location lastLocation;
private GoogleApiClient.OnConnectionFailedListener onConnectionFailedListener;
private LocationRequest locationRequest;
private LocationListener locationListener;
private LocationManager locationManager;
private Marker marker, driverMarker;
private GoogleMap mMap;
private GoogleApiClient googleApiClient;
private final int RequestCode = 10;
private final int ResourceCode = 11;
private DatabaseReference userLastLocation, customersUnderServiceRef, userRequest, driversOnDuty,workingDrivers, driverRef1, driverWorkingRef ;
GeoFire location, onDuty, customersUnderService;
private Boolean clicked = false;
private String driverID = "";
private ValueEventListener driverListener;
private GeoQuery geoQuery;
private String myId = "";
private Double driverLat, driverLng;
private PlaceAutocomplete pickup, drop;


@Override
protected void onCreate(Bundle savedInstanceState)
{
    checkLocationPermission();
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_welcome);
    mapFragment = (SupportMapFragment)
            getSupportFragmentManager()
                    .findFragmentById(R.id.map);
    mapFragment.getMapAsync(this);
    locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);

    userLastLocation = FirebaseDatabase.getInstance().getReference("User LastLocation");
    location = new GeoFire(userLastLocation);
    setupLocation();

    driversOnDuty = FirebaseDatabase.getInstance().getReference("DriversOnDuty");
    onDuty = new GeoFire(driversOnDuty);

    driverWorkingRef = FirebaseDatabase.getInstance().getReference().child("DriversWorking");

    customersUnderServiceRef = FirebaseDatabase.getInstance().getReference().child("CustomersUnderService");
    customersUnderService = new GeoFire(customersUnderServiceRef);

}

@Override
public void onMapReady(GoogleMap googleMap)
{
    myId = FirebaseAuth.getInstance().getCurrentUser().getUid();
    setupUiViews();
    mMap = googleMap;
    displayLocation();

}

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults)
{
    switch (requestCode) {
        case RequestCode:
            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                if (checkPlayServices()){
                    buildGoogleApiClient();
                    createLocationRequest();
                    displayLocation();
                }
            }
            break;
    }
}

@Override
public void onConnected(@Nullable Bundle bundle)
{
    if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED
            && ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) == PackageManager.PERMISSION_GRANTED){

        if (googleApiClient == null){
            buildGoogleApiClient();
        }
        if (!googleApiClient.isConnected()){
            googleApiClient.connect();
        }
        startLocationUpdates();
        displayLocation2();

        locationRequest = LocationRequest
                .create()
                .setInterval(1000)
                .setFastestInterval(500)
                .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);

        startLocationUpdates();
        displayLocation();

    }else {
        checkLocationPermission();
    }

}

@Override
public void onConnectionSuspended(int i)

{
    googleApiClient.connect();
}

@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult)
{
}

@Override
public void onLocationChanged(Location location)
{
    lastLocation = location;
    displayLocation2();

}

public void checkLocationPermission()
{
    if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED)
    {
        if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.ACCESS_FINE_LOCATION))
        {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, RequestCode);
        } else {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, RequestCode);
        }
    }
}

protected synchronized void buildGoogleApiClient()
{
    googleApiClient = new GoogleApiClient.Builder(this)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .addApi(LocationServices.API)
            .build();
    googleApiClient.connect();
}

private void setupUiViews()

{
    btnBooking = findViewById(R.id.bookingButton);
    btnBooking.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (clicked == false) {
                Toast.makeText(Welcome.this, "Getting Cab", Toast.LENGTH_SHORT).show();
                btnBooking.setText(R.string.gettingCab);
                clicked = true;
                getNearestDriver();
            } else
            {
                if(!driverFound){
                    btnBooking.setText(R.string.callTaxi);

                    stopLocationUpdates();
                    String userId = FirebaseAuth.getInstance().getCurrentUser().getUid();
                    DatabaseReference databaseReference1 = FirebaseDatabase.getInstance().getReference("Customer Request");
                    GeoFire geoFire1 = new GeoFire(databaseReference1);
                    geoFire1.removeLocation(userId);
                    Toast.makeText(Welcome.this, "Canceling Cab", Toast.LENGTH_SHORT).show();
                    if(driverMarker!=null){
                        driverMarker.remove();
                    }
                    clicked = false;
                }
            }
        }
    });
}

private void displayLocation()

{
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
            ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED)
    {
        return;
    }
    lastLocation = LocationServices.FusedLocationApi.getLastLocation(googleApiClient);
    if (lastLocation != null ){
        final Double lat = lastLocation.getLatitude();
        final Double lng = lastLocation.getLongitude();

        location.setLocation(FirebaseAuth.getInstance().getCurrentUser().getUid(), new GeoLocation(lat, lng), new GeoFire.CompletionListener()
        {
            @Override
            public void onComplete(String key, DatabaseError error) {
                if (marker != null) {
                    marker.remove();
                    marker = mMap.addMarker(new MarkerOptions().position(new LatLng(lat, lng)).icon(BitmapDescriptorFactory.fromResource(R.drawable.location_marker)).title("You"));

                    mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(lat, lng), 15.0f));
                }else{
                    marker = mMap.addMarker(new MarkerOptions().position(new LatLng(lat, lng)).icon(BitmapDescriptorFactory.fromResource(R.drawable.location_marker)).title("You"));

                    mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(lat, lng), 15.0f));
                }
            }
        });

    }else{
        Log.d("Error", "Cannot Get Your Location");
    }
}

private void displayLocation2()
{
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED &&
            ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED)
    {
        return;
    }
    lastLocation = LocationServices.FusedLocationApi.getLastLocation(googleApiClient);
    if (lastLocation != null ){
        if(clicked == true){
            if (marker != null){
                marker.remove();
            }
            final Double lat = lastLocation.getLatitude();
            final Double lng = lastLocation.getLongitude();

            customersUnderService.setLocation(FirebaseAuth.getInstance().getCurrentUser().getUid(), new GeoLocation(lat, lng), new GeoFire.CompletionListener()
            {
                @Override
                public void onComplete(String key, DatabaseError error) {
                    if (marker != null) {
                        marker.remove();
                        marker = mMap.addMarker(new MarkerOptions().position(new LatLng(lat, lng)).icon(BitmapDescriptorFactory.fromResource(R.drawable.location_marker)).title("You"));

                    }else{
                        marker = mMap.addMarker(new MarkerOptions().position(new LatLng(lat, lng)).icon(BitmapDescriptorFactory.fromResource(R.drawable.location_marker)).title("You"));
                    }
                }
            });
        }
    }else{
        Log.d("Error", "Cannot Get Your Location");
    }
}

private void setupLocation()
{
    if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED)
    {
        if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.ACCESS_FINE_LOCATION))
        {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, RequestCode);
        } else {
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, RequestCode);
        }
    }else{
        if (checkPlayServices())
        {
            buildGoogleApiClient();
            createLocationRequest();

        }
    }
}

private void createLocationRequest()
{
    locationRequest = LocationRequest.create()
            .setInterval(1500)
            .setFastestInterval(500)
            .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
            .setSmallestDisplacement(0);
}

private boolean checkPlayServices()
{
    int resultCode = GooglePlayServicesUtil.isGooglePlayServicesAvailable(this);
    if (resultCode != ConnectionResult.SUCCESS)
    {
        if (GooglePlayServicesUtil.isUserRecoverableError(resultCode))
            GooglePlayServicesUtil.getErrorDialog(resultCode, this, ResourceCode).show();
        else {
            Toast.makeText(this, "This Device Is Not Supported", Toast.LENGTH_SHORT).show();
            finish();
        }return false;
    }
    return true;
}

private void stopLocationUpdates()
{
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED)
    {
        return;
    }
    LocationServices.FusedLocationApi.removeLocationUpdates(googleApiClient, this);
}

private void startLocationUpdates()
{
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED)
    {
        return;
    }
    LocationServices.FusedLocationApi.requestLocationUpdates(googleApiClient, locationRequest, this);
}

private int radius = 1;
private Boolean driverFound = false;

private void getNearestDriver()
{
    geoQuery = onDuty.queryAtLocation(new GeoLocation(lastLocation.getLatitude(), lastLocation.getLongitude()), radius);
    geoQuery.removeAllListeners();

    geoQuery.addGeoQueryEventListener(new GeoQueryEventListener() {
        @Override
        public void onKeyEntered(String key, GeoLocation location) {

            String driverId = key;
            if(!driverFound){
                driverFound = true;
                driverID = key;
                DatabaseReference driverRef = FirebaseDatabase.getInstance().getReference().child("DriversWorking").child(driverId);

                String customerId = FirebaseAuth.getInstance().getCurrentUser().getUid();

                HashMap map = new HashMap();
                map.put("customerRideId", customerId);
                driverRef.updateChildren(map);

                driverID = key;
                btnBooking.setText(R.string.gettingTaxiLocation);

                customersUnderService.setLocation(FirebaseAuth.getInstance().getCurrentUser().getUid(), new GeoLocation(lastLocation.getLatitude(), lastLocation.getLongitude()));

                getDriverLocation();
                driversOnDuty.child(key).removeValue();
            }
        }

        @Override
        public void onKeyExited(String key) {

        }

        @Override
        public void onKeyMoved(String key, GeoLocation location) { }

        @Override
        public void onGeoQueryReady() {
            if(!driverFound){
                radius++;
                getNearestDriver();
            }
        }

        @Override
        public void onGeoQueryError(DatabaseError error) {

        }
    });
}

private void getDriverLocation()
{
    driverWorkingRef = driverWorkingRef.child(driverID).child("l");
    driverListener = driverWorkingRef.addValueEventListener(new ValueEventListener() {
        @Override
        public void onDataChange(DataSnapshot dataSnapshot) {
            if (dataSnapshot.exists()){
                List<Object> map = (List<Object>) dataSnapshot.getValue();
                double locationLat = 0;
                double locationLng = 0;

                btnBooking.setText(R.string.driverComing);

                if (map.get(0) != null)
                {
                    locationLat = Double.parseDouble(map.get(0).toString());
                    driverLat = locationLat;
                }

                if (map.get(1) != null)
                {
                    locationLng = Double.parseDouble(map.get(1).toString());
                    driverLng = locationLng;
                }

                LatLng driverLatLng = new LatLng(locationLat, locationLng);

                if (driverMarker != null) {
                    driverMarker.remove();
                }
                driverMarker = mMap.addMarker(new MarkerOptions().position(driverLatLng).icon(BitmapDescriptorFactory.fromResource(R.drawable.carmarker)).title("You"));
                mMap.moveCamera(CameraUpdateFactory.newLatLngZoom(driverLatLng, 15.0f));

                Location myLoc = new Location("");
                Location driverLoc = new Location("");

                myLoc.setLatitude(lastLocation.getLatitude());
                myLoc.setLongitude(lastLocation.getLongitude());

                driverLoc.setLatitude(locationLat);
                driverLoc.setLongitude(locationLng);

                float distance = myLoc.distanceTo(driverLoc);
                ;
                if (distance<100){
                    btnBooking.setText(R.string.driverReached);

                }
            }getDriverLocation();

        }

        @Override
        public void onCancelled(DatabaseError databaseError) {

        }
    });
}  

@Override
protected void onStop()
{
    super.onStop();

}

@Override
protected void onPause() {
    super.onPause();
}
}

Estos son los errores en el Logcat.

06-04 17:39:10.550 13127-13127/com.matt.autozauser E/art: The String#value field is not present on Android versions >= 6.0

06-04 17:39:11.166 13127-13358/com.matt.autozauser E/HAL: PATH3 /odm/lib64/hw/gralloc.qcom.so
    PATH2 /vendor/lib64/hw/gralloc.qcom.so
    PATH1 /system/lib64/hw/gralloc.qcom.so
    PATH3 /odm/lib64/hw/gralloc.msm8953.so
    PATH2 /vendor/lib64/hw/gralloc.msm8953.so
    PATH1 /system/lib64/hw/gralloc.msm8953.so


06-04 17:40:19.271 13127-13228/com.matt.autozauser E/NoopPersistenceManager: Caught Throwable.
java.lang.StackOverflowError: stack size 1037KB
    at com.google.firebase.database.collection.zza.insert(Unknown Source)
    at com.google.android.gms.internal.firebase_database.zzgj.zzb(Unknown Source)
    at com.google.android.gms.internal.firebase_database.zzgj.zzb(Unknown Source)
    at com.google.android.gms.internal.firebase_database.zzgj.zzb(Unknown Source)
    at com.google.android.gms.internal.firebase_database.zzgj.zzb(Unknown Source)
    at com.google.android.gms.internal.firebase_database.zzgj.zzb(Unknown Source)
    at com.google.android.gms.internal.firebase_database.zzgj.zzb(Unknown Source)
    at com.google.android.gms.internal.firebase_database.zzgj.zzb(Unknown Source)
    at com.google.android.gms.internal.firebase_database.zzgj.zzb(Unknown Source)
    at com.google.android.gms.internal.firebase_database.zzgj.zzb(Unknown Source)
    at com.google.android.gms.internal.firebase_database.zzgj.zzb(Unknown Source)
    at com.google.android.gms.internal.firebase_database.zzgj.zzb(Unknown Source)
    at com.google.android.gms.internal.firebase_database.zzgj.zzb(Unknown Source)
    at com.google.android.gms.internal.firebase_database.zzgj.zzb...[20]

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