Fatal error: Uncaught Error: Interface 'Illuminate\Contracts\Http\Kernel' not found in D:\xampp\htdocs\psp\backend\vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.php:15 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\laravel\framework\src\Illuminate\Foundation\Http\Kernel.php on line 15