QML Bluetooth scanner example doesn't work

[xalam]

The Qt example to scan Bluetooth devices here or just open up Qt Creator and load it from the example there, doesn't work for me. When I run it ti gives out an error:

qml: Error: Invalid Bluetooth Adapter Error

Of course this is code generated error and here is the actual qml file that generates it (again same as the Qt supplied example).

import QtQuick 2.0
import QtBluetooth 5.2

Item {
    id: top

    property BluetoothService currentService

    BluetoothDiscoveryModel {
        id: btModel
        running: true
        discoveryMode: BluetoothDiscoveryModel.DeviceDiscovery
        onDiscoveryModeChanged: console.log("Discovery mode: " + discoveryMode)
        onServiceDiscovered: console.log("Found new service " + service.deviceAddress + " " + service.deviceName + " " + service.serviceName);
        onDeviceDiscovered: console.log("New device: " + device)
        onErrorChanged: {
                switch (btModel.error) {
                case BluetoothDiscoveryModel.PoweredOffError:
                    console.log("Error: Bluetooth device not turned on"); break;
                case BluetoothDiscoveryModel.InputOutputError:
                    console.log("Error: Bluetooth I/O Error"); break;
                case BluetoothDiscoveryModel.InvalidBluetoothAdapterError:
                    console.log("Error: Invalid Bluetooth Adapter Error"); break;
                case BluetoothDiscoveryModel.NoError:
                    break;
                default:
                    console.log("Error: Unknown Error"); break;
                }
        }
   }

    Rectangle {
        id: busy

        width: top.width * 0.7;
        anchors.horizontalCenter: parent.horizontalCenter
        anchors.top: top.top;
        height: text.height*1.2;
        radius: 5
        color: "#1c56f3"
        visible: btModel.running

        Text {
            id: text
            text: "Scanning"
            font.bold: true
            font.pointSize: 20
            anchors.centerIn: parent
        }

        SequentialAnimation on color {
            id: busyThrobber
            ColorAnimation { easing.type: Easing.InOutSine; from: "#1c56f3"; to: "white"; duration: 1000; }
            ColorAnimation { easing.type: Easing.InOutSine; to: "#1c56f3"; from: "white"; duration: 1000 }
            loops: Animation.Infinite
        }
    }

    ListView {
        id: mainList
        width: top.width
        anchors.top: busy.bottom
        anchors.bottom: buttonGroup.top
        anchors.bottomMargin: 10
        anchors.topMargin: 10
        clip: true

        model: btModel
        delegate: Rectangle {
            id: btDelegate
            width: parent.width
            height: column.height + 10

            property bool expended: false;
            clip: true
            Image {
                id: bticon
                source: "qrc:/default.png";
                width: bttext.height;
                height: bttext.height;
                anchors.top: parent.top
                anchors.left: parent.left
                anchors.margins: 5
            }

            Column {
                id: column
                anchors.left: bticon.right
                anchors.leftMargin: 5
                Text {
                    id: bttext
                    text: deviceName ? deviceName : name
                    font.family: "FreeSerif"
                    font.pointSize: 16
                }

                Text {
                    id: details
                    function get_details(s) {
                        if (btModel.discoveryMode == BluetoothDiscoveryModel.DeviceDiscovery) {
                            //We are doing a device discovery
                            var str = "Address: " + remoteAddress;
                            return str;
                        } else {
                            var str = "Address: " + s.deviceAddress;
                            if (s.serviceName) { str += "<br>Service: " + s.serviceName; }
                            if (s.serviceDescription) { str += "<br>Description: " + s.serviceDescription; }
                            if (s.serviceProtocol) { str += "<br>Protocol: " + s.serviceProtocol; }
                            return str;
                        }
                    }
                    visible: opacity !== 0
                    opacity: btDelegate.expended ? 1 : 0.0
                    text: get_details(service)
                    font.family: "FreeSerif"
                    font.pointSize: 14
                    Behavior on opacity {
                        NumberAnimation { duration: 200}
                    }
                }
            }
            Behavior on height { NumberAnimation { duration: 200} }

            MouseArea {
                anchors.fill: parent
                onClicked: btDelegate.expended = !btDelegate.expended
            }
        }
        focus: true
    }

    Row {
        id: buttonGroup
        property var activeButton: devButton

        anchors.bottom: parent.bottom
        anchors.horizontalCenter: parent.horizontalCenter
        anchors.bottomMargin: 5
        spacing: 10

        Button {
            id: fdButton
            width: top.width/3*0.9
            //mdButton has longest text
            height: mdButton.height
            text: "Full Discovery"
            onClicked: btModel.discoveryMode = BluetoothDiscoveryModel.FullServiceDiscovery
        }
        Button {
            id: mdButton
            width: top.width/3*0.9
            text: "Minimal Discovery"
            onClicked: btModel.discoveryMode = BluetoothDiscoveryModel.MinimalServiceDiscovery
        }
        Button {
            id: devButton
            width: top.width/3*0.9
            //mdButton has longest text
            height: mdButton.height
            text: "Device Discovery"
            onClicked: btModel.discoveryMode = BluetoothDiscoveryModel.DeviceDiscovery
        }
    }

}