title: Issue in php artisan config:clear in Laravel
body: <p>I run php artisan config:clear or php artisan cache:clear or composer dump-autoload But show this error:</p>
  
  <pre><code>PHP Fatal error:  Uncaught ReflectionException: Class App\Console\Kernel does not exist in 
  vendor/laravel/framework/src/Illuminate/Container/Container.php:767
  Stack trace:
  #0    
  vendor/laravel/framework/src/Illuminate/Container/Container.php(767): ReflectionClass-&gt;__construct('App\\Console\\Ker...')
  #1    
  vendor/laravel/framework/src/Illuminate/Container/Container.php(646): 
  Illuminate\Container\Container-&gt;build('App\\Console\\Ker...')
  #2 
  vendor/laravel/framework/src/Illuminate/Container/Container.php(601): 
  Illuminate\Container\Container-&gt;resolve('App\\Console\\Ker...', Array)
  #3      
     vendor/laravel/framework/src/Illuminate/Foundation/Application.php(734):     
  Illuminate\Container\Container-&gt;make('App\\Console\\Ker...', Array)
  #4     
  vendor/laravel/framework/src/Illuminate/Container/Container.php(256):     
  Illuminate\Foundation\Appl in 
  vendor/laravel/framework/src/Illuminate/Container/Container.php on 
  line 767
  </code></pre>
  
  <p>Laravel version is 5.6 </p>
  
  <p>I run php artisan config:clear or php artisan cache:clear or composer dump-autoload.</p>
  
  <p>Show this error after run php artisan config:clear</p>
  
  <p>Update 1:</p>
  
  <p>My Composer.json file is this code:</p>
  
  <pre><code>{
  "name": "laravel/laravel",
  "description": "The Laravel Framework.",
  "keywords": ["framework", "laravel"],
  "license": "MIT",
  "type": "project",
  "require": {
      "php": "&gt;=7.1.3",
      "bogardo/mailgun": "^5.0",
      "cviebrock/eloquent-sluggable": "^4.5",
      "fideloper/proxy": "~4.0",
      "intervention/image": "^2.4",
      "laravel/framework": "5.6.*",
      "laravel/tinker": "~1.0",
      "laravelcollective/html": "^5.6",
      "php-http/guzzle6-adapter": "^1.1",
      "pusher/pusher-php-server": "^3.0",
      "uxweb/sweet-alert": "^1.4"
  },
  "require-dev": {
      "filp/whoops": "~2.0",
      "nunomaduro/collision": "~1.1",
      "fzaninotto/faker": "~1.4",
      "mockery/mockery": "~1.0",
      "phpunit/phpunit": "~7.0",
      "symfony/thanks": "^1.0"
  },
  "aXutoload": {
      "classmap": [
          "database/seeds",
          "database/factories"
      ],
      "psr-4": {
          "App\\": "app/"
      }
  },
  "autoload-dev": {
      "psr-4": {
          "Tests\\": "tests/"
      }
  },
  "extra": {
      "laravel": {
          "dont-discover": [
          ]
      }
  },
  "scripts": {
      "post-root-package-install": [
          "@php -r \"file_exists('.env') || copy('.env.example', '.env');\""
      ],
      "post-create-project-cmd": [
          "@php artisan key:generate"
      ],
      "post-autoload-dump": [
          "Illuminate\\Foundation\\ComposerScripts::postAutoloadDump",
          "@php artisan package:discover"
      ]
  },
  "config": {
      "preferred-install": "dist",
      "sort-packages": true,
      "optimize-autoloader": true
  },
  "minimum-stability": "dev",
  "prefer-stable": true
  }
  </code></pre>
  
  <p>This file is My composer.json.
  How to issue this problem?</p>