Fatal error: Uncaught Error: Class "App\Http\Controllers\Controller" not found in /var/www/html/repo/school-infix-v6.0/app/Http/Controllers/SmItemSellController.php:37 Stack trace: #0 {main} thrown in /var/www/html/repo/school-infix-v6.0/app/Http/Controllers/SmItemSellController.php on line 37