problem with php artisan app:name

Hi every one, I was working on a project for a while , then today I have used this command on my Terminal : php artisan app:name Torba then my project didn't load and php artisan commands are not working in terminal now and they give me these Errors:

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

please help me, thanks a lot.