php artisan commands not working in laravel

php artisan commands not working in laravel but there is an error ##################################################################

PHP Fatal error: Uncaught ReflectionException: Class request does not exist in C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Container\Container.php:752 Stack trace: #0 C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Container\Container.php(752): ReflectionClass->__construct('request') #1 C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Container\Container.php(631): Illuminate\Container\Container->build('request') #2 C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Container\Container.php(586): Illuminate\Container\Container->resolve('request', Array) #3 C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Foundation\Application.php(732): Illuminate\Container\Container->make('request', Array) #4 C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Foundation\helpers.php(110): Illuminate\Foundation\Application->make('request', Array) #5 C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Foundation\help in C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Container\Container.php on line 752

Fatal error: Uncaught ReflectionException: Class request does not exist in C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Container\Container.php:752 Stack trace: #0 C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Container\Container.php(752): ReflectionClass->__construct('request') #1 C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Container\Container.php(631): Illuminate\Container\Container->build('request') #2 C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Container\Container.php(586): Illuminate\Container\Container->resolve('request', Array) #3 C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Foundation\Application.php(732): Illuminate\Container\Container->make('request', Array) #4 C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Foundation\helpers.php(110): Illuminate\Foundation\Application->make('request', Array) #5 C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Foundation\help in C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Container\Container.php on line 752

############################################################################ than I use " dd($exception);" in helper and this exception came up: ################################################################################ Symfony\Component\Debug\Exception\FatalThrowableError {#36 #message: "Type error: Argument 2 passed to Illuminate\Routing\UrlGenerator::__construct() must be an instance of Illuminate\Http\Request, null given, called in C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Routing\RoutingServiceProvider.php on line 67" #code: 0 #file: "C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Routing\UrlGenerator.php" #line: 102 #severity: E_RECOVERABLE_ERROR trace: { C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Routing\UrlGenerator.php:102 { …} C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Routing\RoutingServiceProvider.php:67 { …} C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Container\Container.php:749 { …} C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Container\Container.php:631 { …} C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Container\Container.php:586 { …} C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Foundation\Application.php:732 { …} C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Foundation\helpers.php:110 { …} C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Foundation\helpers.php:936 { …} C:\xampp7.4\htdocs\blog\config\admin.php:25 { › */ › 'logo' => '', › arguments: { $path: "logo/logo-big-white.png" } } C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Foundation\Bootstrap\LoadConfiguration.php:71 { …} C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Foundation\Bootstrap\LoadConfiguration.php:39 { …} C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Foundation\Application.php:213 { …} C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Foundation\Console\Kernel.php:296 { …} C:\xampp7.4\htdocs\blog\vendor\laravel\framework\src\Illuminate\Foundation\Console\Kernel.php:119 { …} C:\xampp7.4\htdocs\blog\artisan:37 { …} } }

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