Товары со скидками

[Error] 
Class 'Bitrix\Catalog\DiscountTable' not found (0)
/home/a/alfaroqh/stolistul.rf/public_html/local/php_interface/init.php:106
#0: getIdProduct()
	/home/a/alfaroqh/stolistul.rf/public_html/skidki/index.php:4