Fatal error: Uncaught Exception: Error: Unknown column 'special' in 'order clause'<br />Error No: 1054<br />SELECT DISTINCT p.*, pd.*, p2c.sort_order_in_category FROM oc_product p LEFT JOIN oc_product_description pd ON (p.product_id = pd.product_id) LEFT JOIN oc_product_to_category p2c ON (p.product_id = p2c.product_id) WHERE p2c.category_id = '102' AND p.status = '1' AND p.date_available <= NOW() ORDER BY (CASE WHEN special IS NOT NULL THEN special WHEN discount IS NOT NULL THEN discount ELSE p.price END) ASC LIMIT 0,18 in /var/www/miniagro/miniagro.ua/system/library/db/mysqli.php:43 Stack trace: #0 /var/www/miniagro/miniagro.ua/system/library/db.php(16): DB\MySQLi->query('SELECT DISTINCT...', Array) #1 /var/www/miniagro/miniagro.ua/system/storage/modification/catalog/model/catalog/product.php(198): DB->query('SELECT DISTINCT...') #2 /var/www/miniagro/miniagro.ua/vqmod/vqcache/vq2-system_storage_modification_system_engine_loader.php(178): ModelCatalogProduct->getProducts(Array) #3 /var in /var/www/miniagro/miniagro.ua/system/library/db/mysqli.php on line 43