How to use Google Maps in Unity url error

using UnityEngine;
using System.Collections;

public class GoogleMapAPI : MonoBehaviour
{
    private bool loadingMap;

    string url = "";

    public float lat =0.0f;

    public float lon = 0.0f;
    LocationInfo li;


    public int zoom = 14;

    public int mapWidth = 640;
    public int mapHeigh = 640;

    public enum mapType { roadmap, satellite, hybrid, terrain };

    public mapType mapSelected;

    public int scale;
    IEnumerator GetGoogleMap()
    {
        url = "https://maps.googleapis.com/maps/api/staticmap?center=" + lat + "," + lon +
                    "&zoom=" + zoom + "&size=" + mapWidth + "x" + mapHeigh + "&scale=" + scale
                    + + "&maptype=" + mapSelected +
                    "&markers=color:blue%7Clabel:S%7C40.702147,-74.015794&markers=color:green%7Clabel:G%7C40.711614,-74.012318&markers=color:red%7Clabel:C%7.7187,91871871828,7187,7187,7187,7187,98.98.98.98.98.98.98.98.98.98.98.98.98.98.98.98.74.0174.0174.01.74.";
        loadingMap = true;
        WWW www = new WWW(url);
        yield return www;
        loadingMap = false;

        gameObject.GetComponent<Renderer>().material.mainTexture = www.texture;
    }
    void Start()
    {

        StartCoroutine(GetGoogleMap());
    }
}