Fatal error: Uncaught Exception: Error: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1<br />Error No: 1064<br />SELECT GROUP_CONCAT(filter_id) as filter FROM oc_filter WHERE filter_group_id = in /var/www/retailapple/data/www/retailapple.ru/system/library/db/mysqli.php:45 Stack trace: #0 /var/www/retailapple/data/www/retailapple.ru/system/library/db.php(21): DB\MySQLi->query('SELECT GROUP_CO...', Array) #1 /var/www/retailapple/data/www/retailapple.ru/catalog/model/catalog/filter.php(66): DB->query('SELECT GROUP_CO...') #2 /var/www/retailapple/data/www/retailapple.ru/system/storage/modification/system/engine/loader.php(183): ModelCatalogFilter->getFilterRelatedProducts(245) #3 /var/www/retailapple/data/www/retailapple.ru/system/engine/proxy.php(30): Loader->{closure}(Array, Array) #4 /var/www/retailapple/data/www/retailapple.ru/system/storage/modification/catalog/controller/product/product.php(226): Proxy->__call('getFilte in /var/www/retailapple/data/www/retailapple.ru/system/library/db/mysqli.php on line 45