Fatal error: Uncaught Exception: Error: Unknown column 'p.sort_order' in 'order clause'<br />Error No: 1054<br />SELECT p.product_id FROM ( SELECT DISTINCT ps.product_id, pss.date_added, pss.price, pss.sold_count, pss.status, pss.quantity, pss.manufacturer_id FROM oc_product_special ps LEFT JOIN oc_product pss ON (ps.product_id = pss.product_id) LEFT JOIN oc_product_description pd ON (pss.product_id = pd.product_id) LEFT JOIN oc_product_to_store p2s ON (pss.product_id = p2s.product_id) WHERE pss.status = '1' AND pss.date_available <= NOW() AND p2s.store_id = '0' AND ps.customer_group_id = '1' AND ((ps.date_start = '0000-00-00' OR ps.date_start < NOW()) AND (ps.date_end = '0000-00-00' OR ps.date_end > NOW())) ) p LEFT JOIN oc_manufacturer om ON (p.manufacturer_id = om.manufacturer_id) LEFT JOIN oc_product_description pd ON (p.product_id = pd.product_id) WHERE p.status = 1 AND om.status = 1 AND p.quantity >= 1 GROUP BY p.product_id ORDER BY p.sort_order ASC in /var/www/html/www/system/library/db/mysqli.php:40 Stack trace in /var/www/html/www/system/library/db/mysqli.php on line 40