Json file with route for google maps api

Question

I'm trying to pave the way on google maps. Wrote a function and json file. I think that I made a mistake from the coordinates, or by json itself. Please help me find the error in the code. The documentation from Google is a little incomprehensible to me, so I can’t completely get it right.

class MapView: UIView,CLLocationManagerDelegate,GMSMapViewDelegate {

    @IBOutlet var contentView: UIView!

    private func initView() {
        Bundle.main.loadNibNamed("MapView", owner: self, options: nil)
          contentView = mapView
        addSubview(contentView)

        contentView.frame = self.bounds

        locationManager = CLLocationManager()
        locationManager.delegate = self
        locationManager.requestWhenInUseAuthorization()
        locationManager.startUpdatingLocation()
        locationManager.desiredAccuracy = kCLLocationAccuracyBest
        locationManager.startMonitoringSignificantLocationChanges()


        mapView.delegate = self
        mapView.isMyLocationEnabled = true

            self.drawPath()

    }
     let mapView = GMSMapView.map(withFrame: CGRect.zero, camera: GMSCameraPosition.camera(withLatitude: 49, longitude: 98, zoom: 15.0))


    func drawPath()
    {
        let origin = "\(49),\(98)"
        let destination = "\(49.3),\(96)"

        let url = "https://maps.googleapis.com/maps/api/directions/json?origin=\(origin)&destination=\(destination)&mode=driving&key=MY_KEY"

        Alamofire.request(url).responseJSON { response in
            print(response.request)  // original URL request
            print(response.response) // HTTP URL response
            print(response.data)     // server data
            print(response.result)   // result of response serialization

            let json = try? JSON(data: response.data!)
            let routes = json!["routes"].arrayValue

            for route in routes
            {
                let routeOverviewPolyline = route["overview_polyline"].dictionary
                let points = routeOverviewPolyline?["points"]?.stringValue
                let path = GMSPath.init(fromEncodedPath: points!)
                let polyline = GMSPolyline.init(path: path)
                polyline.map = self.mapView
            }
        }
    }
}

routes.json

[
{
    "error_message" : "You must use an API key to authenticate each request to Google Maps Platform APIs. For additional information, please refer to http://g.co/dev/maps-no-account",
    "routes" : [],
    "status" : "REQUEST_DENIED"
},
"overview_polyline" : {
    "points" : "knjmEnjunUbKCfEA?_@]@kMBeE@qIIoF@wH@eFFk@WOUI_@?u@j@k@`@EXLTZHh@Y`AgApAaCrCUd@cDpDuAtAoApA{YlZiBdBaIhGkFrDeCtBuFxFmIdJmOjPaChDeBlDiAdD}ApGcDxU}@hEmAxD}[tt@yNb\\yBdEqFnJqB~DeFxMgK~VsMr[uKzVoCxEsEtG}BzCkHhKWh@]t@{AxEcClLkCjLi@`CwBfHaEzJuBdEyEhIaBnCiF|K_Oz\\{MdZwAbDaKbUiB|CgCnDkDbEiE|FqBlDsLdXqQra@kX|m@aF|KcHtLm@pAaE~JcTxh@w\\`v@gQv`@}F`MqK`PeGzIyGfJiG~GeLhLgIpIcE~FsDrHcFfLqDzH{CxEwAbBgC|B}F|DiQzKsbBdeA{k@~\\oc@bWoKjGaEzCoEzEwDxFsUh^wJfOySx[uBnCgCbCoFlDmDvAiCr@eRzDuNxC_EvAiFpCaC|AqGpEwHzFoQnQoTrTqBlCyDnGmCfEmDpDyGzGsIzHuZzYwBpBsC`CqBlAsBbAqCxAoBrAqDdDcNfMgHbHiPtReBtCkD|GqAhBwBzBsG~FoAhAaCbDeBvD_BlEyM``@uBvKiA~DmAlCkA|B}@lBcChHoJnXcB`GoAnIS~CIjFDd]A|QMlD{@jH[vAk@`CoGxRgPzf@aBbHoB~HeMx^eDtJ}BnG{DhJU`@mBzCoCjDaAx@mAnAgCnBmAp@uAj@{Cr@wBPkB@kBSsEW{GV}BEeCWyAWwHs@qH?cIHkDXuDn@mCt@mE`BsH|CyAp@}AdAaAtAy@lBg@pCa@jE]fEcBhRq@pJKlCk@hLFrB@lD_@xCeA`DoBxDaHvM_FzImDzFeCpDeC|CkExDiJrHcBtAkDpDwObVuCpFeCdHoIl\\uBjIuClJsEvMyDbMqAhEoDlJ{C|J}FlZuBfLyDlXwB~QkArG_AnDiAxC{G|OgEdLaE`LkBbEwG~KgHnLoEjGgDxCaC`BuJdFkFtCgCnBuClD_HdMqEzHcBpB_C|BuEzCmPlIuE|B_EtDeBhCgAdCw@rCi@|DSfECrCAdCS~Di@jDYhA_AlC{AxCcL`U{GvM_DjFkBzBsB`BqDhBaEfAsTvEmEr@iCr@qDrAiFnCcEzCaE~D_@JmFdGQDwBvCeErEoD|BcFjC}DbEuD~D`@Zr@h@?d@Wr@}@vAgCbEaHfMqA`Cy@dAg@bAO`@gCi@w@W"
        },
{
        "summary" : "I-5 N and US-101 N",
        "warnings" : [],
        "waypoint_order" : []
    "status" : "OK"
    }
]

Answer 1

The error message indicates that you have not provided your API key in the request. From the beginning of the response...

"error_message" : "You must use an API key to authenticate each request to Google Maps Platform APIs. For additional information, please refer to http://g.co/dev/maps-no-account"