I use DateTimePicker
install material-ui-pickers and moment
Have you wrapped the root with MaterialUiPickersProvider?
I resolved problem.
import { MuiThemeProvider } from '@material-ui/core/styles';
import MomentUtils from 'material-ui-pickers/utils/moment-utils';
import MuiPickersUtilsProvider from 'material-ui-pickers/utils/MuiPickersUtilsProvider';
<MuiPickersUtilsProvider utils={MomentUtils} moment={moment}>
{routes()}
</MuiPickersUtilsProvider>
You must wrapper all app in MuiPickersUtilsProvider
Most helpful comment
Have you wrapped the root with
MaterialUiPickersProvider?