Fatal error: Uncaught Error: Interface "Magento\Framework\GraphQl\Query\ResolverInterface" not found in /var/www/magento/html/app/code/BBNT/QuoteGraphQl/Model/Resolver/StoreCode.php:21 Stack trace: #0 {main} thrown in /var/www/magento/html/app/code/BBNT/QuoteGraphQl/Model/Resolver/StoreCode.php on line 21