Unknown column 'order' in 'order clause'

		SELECT p.*,
			pl.`description`, pl.`description_short`, pl.`link_rewrite`, pl.`meta_description`, pl.`meta_keywords`, pl.`meta_title`, pl.`name`, m.`name` AS manufacturer_name, p.`id_manufacturer` as id_manufacturer,
			i.`id_image`, il.`legend`,
			ps.`quantity` AS sales, t.`rate`, pl.`meta_keywords`, pl.`meta_title`, pl.`meta_description`,
			DATEDIFF(p.`date_add`, DATE_SUB(NOW(), INTERVAL 20 DAY)) > 0 AS new
		FROM `vs_product_sale` ps
		LEFT JOIN `vs_product` p ON ps.`id_product` = p.`id_product`
		LEFT JOIN `vs_product_lang` pl ON (p.`id_product` = pl.`id_product` AND pl.`id_lang` = 2)
		LEFT JOIN `vs_image` i ON (i.`id_product` = p.`id_product` AND i.`cover` = 1)
		LEFT JOIN `vs_image_lang` il ON (i.`id_image` = il.`id_image` AND il.`id_lang` = 2)
		LEFT JOIN `vs_manufacturer` m ON (m.`id_manufacturer` = p.`id_manufacturer`)
		LEFT JOIN `vs_tax_rule` tr ON (p.`id_tax_rules_group` = tr.`id_tax_rules_group`
		                                           AND tr.`id_country` = 8
	                                           	   AND tr.`id_state` = 0)
	    LEFT JOIN `vs_tax` t ON (t.`id_tax` = tr.`id_tax`)
		WHERE p.`active` = 1
		AND p.`id_product` IN (
			SELECT cp.`id_product`
			FROM `vs_category_group` cg
			LEFT JOIN `vs_category_product` cp ON (cp.`id_category` = cg.`id_category`)
			WHERE cg.`id_group` = 1
		ORDER BY `order` desc
		LIMIT 0, 500