NavigationMapHelperScreen unavailable、Type NavigationMapScreen unavailable、GeocodeModel is not a type

[ChaXxl]

when I try to run:

QQmlApplicationEngine failed to load component
qrc:/main.qml:72:9: Type NavigationMapHelperScreen unavailable
qrc:/NavigationMapHelperScreen.qml:46:5: Type NavigationMapScreen unavailable
qrc:/NavigationMapScreen.qml:236:9: GeocodeModel is not a type