Fatal error: Uncaught Error: Class "App\Http\Controllers\Controller" not found in /home/demoweb/public_html/backworker/app/Http/Controllers-old/QRCodeController copy.php:14 Stack trace: #0 {main} thrown in /home/demoweb/public_html/backworker/app/Http/Controllers-old/QRCodeController copy.php on line 14