elif isinstance(errors_, list):
        new_errors = _regenerate_error_with_loc(errors=errors_, loc_prefix=())
        return None, new_errors
    else:
        return v_, []


def _get_multidict_value(
    field: ModelField, values: Mapping[str, Any], alias: Union[str, None] = None
) -> Any:
    alias = alias or field.alias
    if is_sequence_field(field) and isinstance(values, (ImmutableMultiDict, Headers)):