Looking for an answer (Laravel)

Fatal error: Uncaught ReflectionException: Class App\Http\Kernel does not exist in C:\laragon\www\BookTime\vendor\laravel\framework\src\Illuminate\Container\Container.php:729 Stack trace: #0 C:\laragon\www\BookTime\vendor\laravel\framework\src\Illuminate\Container\Container.php(729): ReflectionClass->__construct('App\Http\Kernel') #1 C:\laragon\www\BookTime\vendor\laravel\framework\src\Illuminate\Container\Container.php(608): Illuminate\Container\Container->build('App\Http\Kernel') #2 C:\laragon\www\BookTime\vendor\laravel\framework\src\Illuminate\Container\Container.php(564): Illuminate\Container\Container->resolve('App\Http\Kernel', Array) #3 C:\laragon\www\BookTime\vendor\laravel\framework\src\Illuminate\Foundation\Application.php(709): Illuminate\Container\Container->makeWith('App\Http\Kernel', Array) 4 C:\laragon\www\BookTime\vendor\laravel\framework\src\Illuminate\Container\Container.php(248): Illuminate\Foundation\Application->makeWith('App\Http\Kernel', Array) #5 C:\laragon\www\BookTime\vendor\laravel\f in C:\laragon\www\BookTime\vendor\laravel\framework\src\Illuminate\Container\Container.php on line 729


This error occurred when i deleted some unnecessary files. then the localhost shows the above message.


i tried the following commands:
deleted vendor and ran composer install.
 composer install, composer update, composer dump-autoload, php artisan config:clear, route:clear,view:clear.

but none helped. though i have backups. But I want to find the solution so that in future i can solve this.