**我使用php artisan命令，但我看到此错误。**此错误显示在所有Artisan命令中

Argument 2 passed to Illuminate\Routing\UrlGenerator::__construct() must be an instance of Illuminate\Http\Reque   
      st, null given, called in E:\appoo\vendor\laravel\framework\src\Illuminate\Routing\RoutingServiceProvider.php
      on line 65

如何解决此问题？