qdoc hangs when generating QML documentation

import QtQuick
import org.kde.foo as Foo

/*!
  \qmltype ApplicationWindow
  \inqmlmodule org.kde.foo
  \brief A window that provides some basic features needed for all apps
*/
Foo.AbstractApplicationWindow {
    id: root
} 

import QtQuick
import QtQuick.Controls as QQC2
import org.kde.foo as Foo

/*!
  \qmltype AbstractApplicationWindow
  \inqmlmodule org.kde.foo
  A window that provides some basic features needed for all apps
 */
QQC2.ApplicationWindow {}
 

/*!
    \qmlmodule org.kde.foo
    \title Foo QML Types
    \brief Stuff
*/ 

project = Foo
description = Stuff
headerdirs = .
sourcedirs = .
depends = qtcore qtquick qtquickcontrols