<LocalizationProvider dateAdapter={AdapterDateFns}>
<DatePicker
{...field}
renderInput={
(param) => <TextField error={!!errors?.dateBorn} fullWidth margin={'normal'}
helperText={errors?.dateBorn?.message} {...param} />
}
label={'Дата рождения'}
/>
</LocalizationProvider>
adapterLocale={'ru'}
import { AdapterDateFns } from "@mui/x-date-pickers/AdapterDateFns";
import ruLocale from "date-fns/locale/ru";
<LocalizationProvider dateAdapter={AdapterDateFns} locale={ruLocale}>
...
</LocalizationProvider>