Fatal error: Uncaught Error: Class "Magento\Payment\Model\Method\Free" not found in /var/www/magento/html/generated/code/Magento/Payment/Model/Method/Free/Interceptor.php:7 Stack trace: #0 {main} thrown in /var/www/magento/html/generated/code/Magento/Payment/Model/Method/Free/Interceptor.php on line 7