ApplicationWindow is not a type [iOS]

18:38:20: Starting remote process.
qmlRegisterType requires absolute URLs.
qmlRegisterType requires absolute URLs.
qmlRegisterType requires absolute URLs.
qmlRegisterType requires absolute URLs.
qmlRegisterType requires absolute URLs.
qmlRegisterType requires absolute URLs.
qmlRegisterType requires absolute URLs.
qmlRegisterType requires absolute URLs.
 
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QQmlApplicationEngine failed to load component
qrc:/main.qml:6:1: ApplicationWindow is not a type
18:38:24: Run ended.

import QtQuick 2.12
import QtQuick.Layouts 1.12
import QtQuick.Window 2.12
import QtQuick.Controls 2.12
ApplicationWindow { 
id: window
 visible: true
 width: 640
 height: 480
 title: qsTr("Stack") 
}