Fatal error: Uncaught Error: Class "Magento\SalesRule\Model\RulesApplier" not found in /var/www/magento/html/app/code/BBNT/SalesRule/Model/RulesApplier.php:25 Stack trace: #0 {main} thrown in /var/www/magento/html/app/code/BBNT/SalesRule/Model/RulesApplier.php on line 25