Error nil in central.scanWithDuration

[ironrustem]

I have problem. I scan with central.scanWithDuration, but I get nil error. Can you help me please? Why?

My code:`

private var discoveries = [BKDiscovery]()
let central = BKCentral()

func central(_ central: BKCentral, remotePeripheralDidDisconnect remotePeripheral: BKRemotePeripheral) {
    print("DidDisconnect")
}

func availabilityObserver(_ availabilityObservable: BKAvailabilityObservable, availabilityDidChange availability: BKAvailability) {
    if availability == .available {
        print("start scan")
        scan()
    } else {
        central.interruptScan()
    }
}

func availabilityObserver(_ availabilityObservable: BKAvailabilityObservable, unavailabilityCauseDidChange unavailabilityCause: BKUnavailabilityCause) {
    print("CauseDidChange")
}

override func viewDidLoad() {
    super.viewDidLoad()

    tableView.delegate = self
    tableView.dataSource = self

    startCentral()
}

private func startCentral() {
    do {
        central.delegate = self
        central.addAvailabilityObserver(self)
        let dataServiceUUID = UUID(uuidString: "6E6B5C64-FAF7-40AE-9C21-D4933AF45B23")!
        let dataServiceCharacteristicUUID = UUID(uuidString: "477A2967-1FAB-4DC5-920A-DEE5DE685A3D")!
        let configuration = BKConfiguration(dataServiceUUID: dataServiceUUID, dataServiceCharacteristicUUID: dataServiceCharacteristicUUID)
        try central.startWithConfiguration(configuration)
    } catch let error {
        print("Error while starting: \(error)")
    }
}

private func scan() {
    central.scanWithDuration(7, progressHandler: { newDiscoveries in
        print(newDiscoveries)
    }, completionHandler: { result, error in
       print("errorScan \(error)")
        print(result)
    })
}`

[rhummelmose]

Check the example please :)

[longlz19]

The example also returns an error