کار با pusher js

سلام
به نظرتون این ارور برای چی میتونه باشه ؟

Fatal error: Uncaught ReflectionException: Class config does not exist in C:\Users\JeanPaul\Desktop\cms\vendor\laravel\framework\src\Illuminate\Container\Container.php:۷۵۲ Stack trace: #۰ C:\Users\JeanPaul\Desktop\cms\vendor\laravel\framework\src\Illuminate\Container\Container.php(۷۵۲): ReflectionClass->__construct('config') #۱ C:\Users\JeanPaul\Desktop\cms\vendor\laravel\framework\src\Illuminate\Container\Container.php(۶۳۱): Illuminate\Container\Container->build('config') #۲ C:\Users\JeanPaul\Desktop\cms\vendor\laravel\framework\src\Illuminate\Container\Container.php(۵۸۶): Illuminate\Container\Container->resolve('config', Array) #۳ C:\Users\JeanPaul\Desktop\cms\vendor\laravel\framework\src\Illuminate\Foundation\Application.php(۷۳۲): Illuminate\Container\Container->make('config', Array) #۴ C:\Users\JeanPaul\Desktop\cms\vendor\laravel\framework\src\Illuminate\Foundation\helpers.php(۱۱۰): Illuminate\Foundation\Application->make('config', Array) #۵ C:\Users\JeanPaul\Desktop\cms\vendor\laravel\framework\src\Illuminate\Foundat in C:\Users\JeanPaul\Desktop\cms\vendor\laravel\framework\src\Illuminate\Container\Container.php on line ۷۵۲

و راه حلش رو اگه میدونید بگید