Utils n'est pas un constructeur MuipickersutilSprovider
import DateFnsUtils from '@date-io/date-fns'
import { DateTimePicker, MuiPickersUtilsProvider } from '@material-ui/pickers'
<MuiPickersUtilsProvider utils={DateFnsUtils}>
<DateTimePicker .../>
</MuiPickersUtilsProvider>
Wide-eyed Wasp