Qt Quick 5.7 and Mac

[mrdebug]

My app based on Qt Quick, that works perfectly on Linux with Qt 5.7, and on Mac with Qt 5.6 does not work on Mac with Qt 5.7.
The following packages

import QtQuick.Window 2.0
import QtQuick.Dialogs 1.2

seem to not been available.

Can you suggest me something to resolve?

[mrdebug]

Sorry. They are available on Max but not on iOS or iOS Simulator.
Have you got any idea?

[mrdebug]

Solved with downgrade to Qt 5.6