Fatal error: Uncaught Error: Class "App\Http\Controllers\Controller" not found in /home/pumpmanager/pumpapi.pumpmanager.in/app/Http/Controllers/BillingController.php:19 Stack trace: #0 {main} thrown in /home/pumpmanager/pumpapi.pumpmanager.in/app/Http/Controllers/BillingController.php on line 19