Field::getRequiredEmptyError

static function getRequiredEmptyError(string $fieldName, ?string $title = null): Error
{
	$title = $title ?? $fieldName;

	return new Error(
		Loc::getMessage(static::MESSAGE_FIELD_VALUE_REQUIRED, [
			'#FIELD#' => $title,
		]),
		static::ERROR_CODE_REQUIRED_FIELD_ATTRIBUTE,
		[
			'fieldName' => $fieldName,
		]
	);
}