QML Virtual keyboard, KeyboardLayout, BaseKey BaseKey.qml:193: ReferenceError: keyboard is not defined

CubeEd

Hi. I have encounter with referenceError when use KeyboardLayout with Key.
error BaseKey.qml:193: ReferenceError: keyboard is not defined
For any help will be thankful.
code:

import QtQuick 2.7
import QtQuick.Layouts 1.3
import QtQuick.Controls 2.2
import QtQuick.VirtualKeyboard 2.1
Item
{

    KeyboardLayout {

        keyWeight: 160

        KeyboardRow {
            Key {
                key: Qt.Key_Q
                text: "q"
            }
            Key {
                key: Qt.Key_W
                text: "w"
                //keyWeight: 200
            }
        }
    }

CubeEd

I didn't read carefully documentation and as a result i have this question, what ones should do is :

1. copy the existing layout files from QTDIR/qtvirtualkeyboard/src/virtualkeyboard/content/layouts/en_GB
2. adapt to your needs
3. add the files in a (custom) path (e.g. :/path/to/my/layouts/en_GB) to your qrc
in the beginning of your main() add:
qputenv("QT_IM_MODULE", QByteArray("qtvirtualkeyboard"));
qputenv("QT_VIRTUALKEYBOARD_LAYOUT_PATH", ":/path/to/my/kb/layouts");