Fatal error: Uncaught Exception: Error: Unknown column 'p2c.main_category' in 'order clause'<br />Error No: 1054<br />SELECT p2c.category_id FROM oc_product_to_category p2c LEFT JOIN oc_category_path cp ON (p2c.category_id = cp.category_id) WHERE p2c.product_id = '41' ORDER BY p2c.main_category = '1' DESC, cp.level DESC, cp.category_id LIMIT 1 in /home/h3020/web/h3020.h3.ose.su/public_html/system/library/db/mysqli.php:48 Stack trace: #0 /home/h3020/web/h3020.h3.ose.su/public_html/system/library/db.php(45): DB\MySQLi->query() #1 /home/h3020/web/h3020.h3.ose.su/public_html/system/storage/modification/catalog/model/catalog/product.php(589): DB->query() #2 /home/h3020/web/h3020.h3.ose.su/public_html/system/storage/modification/system/engine/loader.php(248): ModelCatalogProduct->getMainCategory() #3 /home/h3020/web/h3020.h3.ose.su/public_html/system/engine/proxy.php(47): Loader->{closure}() #4 /home/h3020/web/h3020.h3.ose.su/public_html/system/storage/modification/catalog/controller/product/product.php(52): Proxy->__call() #5 in /home/h3020/web/h3020.h3.ose.su/public_html/system/library/db/mysqli.php on line 48