Fatal error: Uncaught Error: Class "App\Http\Controllers\Controller" not found in /home/shikkhaplus/public_html/morning_bird_bk/app/Http/Controllers/billing/BillingSalesController.php:23 Stack trace: #0 {main} thrown in /home/shikkhaplus/public_html/morning_bird_bk/app/Http/Controllers/billing/BillingSalesController.php on line 23