apt-get install qml-module-qtquick-controls 

Setting up qml-module-qtquick-layouts:armhf (5.9.5-0ubuntu1.1) ...

Setting up qml-module-qtquick-window2:armhf (5.9.5-0ubuntu1.1) ...

Setting up qml-module-qtgraphicaleffects:armhf (5.9.5-0ubuntu1) ...

Setting up qml-module-qtquick-controls:armhf (5.9.5-0ubuntu1) ...

QQmlApplicationEngine failed to load component

qrc:/main.qml:2 module "QtQuick.Window" is not installed