itinerary requires kitemmodels

Without kitemmodels it does nothing and reports this error:

$ itinerary
...
org.kde.kpublictransport: Unknown backend setting: "supportedOutputFormats"
has portal: false
QQmlApplicationEngine failed to load component
qrc:/main.qml:192:9: Type App.TimelinePage unavailable
qrc:/TimelinePage.qml:158:9: Type App.FlightPage unavailable
qrc:/FlightPage.qml:15:1: Type App.DetailsPage unavailable
qrc:/DetailsPage.qml:11:1: module "org.kde.kitemmodels" is not installed

With kitemmodels works as expected.