No Voice Commands in Mapbox Turn By Turn Directions View - ios

Question

so I've made a map on Mapbox using two different styles. All in all everything is working perfectly until the point where there is supposed to be a voice command of next turn etc.
Ive tried using mapboxVoiceController and as such I have no clue what else to try.
var voiceController: RouteVoiceController!
func calculateRoute(from originCoor: CLLocationCoordinate2D,
to destinationCoor: CLLocationCoordinate2D,
completion: #escaping (Route?, Error?) -> Void) {
// Coordinate accuracy is the maximum distance away from the waypoint that the route may still be considered viable, measured in meters. Negative values indicate that a indefinite number of meters away from the route and still be considered viable.
let origin = Waypoint(coordinate: originCoor, coordinateAccuracy: -1, name: "Start")
let destination = Waypoint(coordinate: destinationCoor, coordinateAccuracy: -1, name: "Finish")
// Specify that the route is intended for automobiles avoiding traffic
let options = RouteOptions(waypoints: [origin, destination], profileIdentifier: .automobileAvoidingTraffic)
options.routeShapeResolution = .full
options.includesSteps = true
options.includesVisualInstructions = true
options.includesSpokenInstructions = true
options.includesExitRoundaboutManeuver = true
_ = Directions.shared.calculate(options) { [unowned self] (waypoints, routes, error) in
guard let route = routes?.first else { return }
let defaults = UserDefaults.standard
let mapPref = defaults.object(forKey: "mapPref") as! String
let navigationService = MapboxNavigationService(route: route)
self.voiceController = RouteVoiceController(navigationService: navigationService)
//loads map based on user Pref
if mapPref == "0" {
let newDayStyle = NavigationOptions(styles: [mapDayStyle()], navigationService: navigationService, voiceController: self.voiceController)
let viewController = NavigationViewController(for: route, options: newDayStyle)
self.present(viewController, animated: true, completion: nil)
} else {
let newNightStyle = NavigationOptions(styles: [mapNightStyle()], navigationService: navigationService, voiceController: self.voiceController)
let viewController = NavigationViewController(for: route, options: newNightStyle)
self.present(viewController, animated: true, completion: nil)
}
}
}
and my two different map class's :
// DayMap Mode
class mapDayStyle : DayStyle {
required init() {
super.init()
mapStyleURL = URL(string: "mapbox://styles/tristanmellett/cjxfrpz7x04881cmj8er9avsf")!
styleType = .day
}
override func apply() {
super.apply()
BottomBannerView.appearance().backgroundColor = .white
}
}
//Night Map Mode
class mapNightStyle : NightStyle {
required init() {
super.init()
mapStyleURL = URL(string: "mapbox://styles/tristanmellett/cjxtzfdrb8ttb1ckc9dpgf18a")!
styleType = .night
}
override func apply() {
super.apply()
BottomBannerView.appearance().backgroundColor = .darkGray
TopBannerView.appearance().backgroundColor = .darkGray
}
}
I would like the voice Command to start working.