Fatal error: Uncaught Error: Class "App\Http\Controllers\Controller" not found in /home/nikxkfvc/public_html/lms10.stnews.top/app/Http/Controllers/Api/CheckoutController.php:18 Stack trace: #0 {main} thrown in /home/nikxkfvc/public_html/lms10.stnews.top/app/Http/Controllers/Api/CheckoutController.php on line 18