Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Queue\ShouldQueue" not found in /home/marketo/demo.marketoo.com.bd/app/Listeners/Inventory/NotifyMerchantStockOut.php:9 Stack trace: #0 {main} thrown in /home/marketo/demo.marketoo.com.bd/app/Listeners/Inventory/NotifyMerchantStockOut.php on line 9