Fatal error: Uncaught Exception: Error: Unknown column 'category_id' in 'where clause'<br />Error No: 1054<br /> SELECT COUNT(DISTINCT p.product_id) total FROM `sb_product` p LEFT JOIN `sb_product_description` pd ON (p.product_id = pd.product_id) LEFT JOIN `sb_product_to_store` p2s ON (p.product_id = p2s.product_id) WHERE p.status = '1' AND p.date_available <= NOW() AND p2s.store_id = '0' AND pd.language_id = '2' AND (category_id IN (81) OR p.product_id IN (SELECT product_id FROM sb_product_special ps WHERE 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())))) in /home/serlegbo/public_html/system/library/db/mysqli.php:40 Stack trace: #0 /home/serlegbo/storage/modification/system/library/db.php(55): DB\MySQLi->query('\n\t\t\tSELECT COUN...') #1 /home/serlegbo/public_html/system/library/journal3/opencart/model.php(48): DB->query('\n\t\t\tSELECT COUN...') #2 /home/serlegbo/storage/modificatio in /home/serlegbo/public_html/system/library/db/mysqli.php on line 40