VDatePicker broken in 3.4.10 (need help creating a playground example)

[MelvinFrohike]

VDatePicker is broken for me since version 3.4.10. It works with 3.4.9.
I suspect the problem is related to the luxon-adapter I use. Unfortunately, I don't know how to configure the playground to use the luxon-adapter.

The error message is: Uncaught (in promise) TypeError: date.getDay is not a function

The date-picker configuration:
<v-date-picker v-model="multipleDateTimes" :multiple="true" :min="minDate" :max="maxDate" elevation="10" :hide-weekdays="true" >

The createVuetify configuration:
createVuetify({ date: { adapter: new LuxonAdapter({ locale: 'de' }) as any } })

Is this a configuration error on my part?
How can I create a playground example with the luxon adapter?