Fatal error: Uncaught Error: Class "App\Http\Controllers\Controller" not found in /home/shikkhaplus/public_html/guk_bk/app/Http/Controllers/billing/transaction/service/BillingServiceController.php:24 Stack trace: #0 {main} thrown in /home/shikkhaplus/public_html/guk_bk/app/Http/Controllers/billing/transaction/service/BillingServiceController.php on line 24