Laravel错误Uncaught异常'；反射异常'；带有消息'；类AppHttpKernel

当我想在我的laravel 5.2项目中添加表单时，我在composer中遇到了一些错误。在那之后，我的整个项目都出现了一个奇怪的错误：

致命错误：未捕获异常"ReflectionException"，消息为中的"Class App''Http''Kernel不存在"C： ''examplep''htdocs''gifkadeh''vendor''laravel''framework''src''Illuminate''Container''Container.php:738堆栈跟踪：#0C： ''examplep''htdocs''gifkadeh''vendor''laravel''framework''src''Illuminate''Container''Container.php（738）：ReflectionClass->__construct（"App''Http''Kernel"）#1C： ''examplep''htdocs''gifkadeh''vendor''laravel''framework''src''Illuminate''Container''Container.php（633）：Illuminate''Container''Contain->构建（"App''Http''Kernel"，数组）#2C： ''examplep''htdocs''gifkadeh''vendor''laravel''framework''src''Illuminate''Foundation''Application.php（697）：Illuminate''Container''Container->make（"App''Http''Kernel"，数组）#3C： ''examplep''htdocs''gifkadeh''vendor''laravel''framework''src''Illuminate''Container''Container.php（230）：Illuminate''Foundation''Application->make（'App''Http''Kernel，Array）#4C： ''examplep''htdocs''gifkadeh''vendor''laravel''framework''src''Illuminate''Container''Container.php（735）：照明''容器''容器->照明''容器｛closure｝（对象（照明在里面C： ''examplep''htdocs''gifkadeh''vendor''laravel''framework''src''Illuminate''Container''Container.php738 线上