Fatal error: Uncaught Error: Class "Magento\Framework\App\Helper\AbstractHelper" not found in /var/www/magento/html/app/code/Fusion/Bulkapi/Helper/Product.php:15 Stack trace: #0 {main} thrown in /var/www/magento/html/app/code/Fusion/Bulkapi/Helper/Product.php on line 15