为什么运行composer install dev我在Barryvdh\Debugbar\ServiceProvider中出错了？

Question

我在实时服务器上安装了laravel 5.7应用程序(产品)，没有dev tools命令，我得到了错误：

composer install --no-dev
...

  - Removing barryvdh/laravel-debugbar (v3.2.1)
Generating optimized autoload files
> Illuminate\Foundation\ComposerScripts::postAutoloadDump
> @php artisan package:discover

在ProviderRepository.php第208行中：

  Class 'Barryvdh\Debugbar\ServiceProvider' not found  



Script @php artisan package:discover handling the post-autoload-dump event returned with error code 1

在我的composer.json中，开发块下有barryvdh/laravel-调试器：

{
    "name": "laravel/laravel",
    "description": "The Laravel Framework.",
    "keywords": ["framework", "laravel"],
    "license": "MIT",
    "type": "project",
    "require": {
        "php": "^7.1.3",
        ...
    },
    "require-dev": {
        "barryvdh/laravel-debugbar": "^3.1",
        "filp/whoops": "^2.0",
        "fzaninotto/faker": "^1.4",
        "mockery/mockery": "^1.0",
        "nunomaduro/collision": "^2.0",
        "orangehill/iseed": "^2.6",
        "phpunit/phpunit": "^7.0",
        "xethron/migrations-generator": "^2.0"
    },

在我的config/app.php中有：

'providers' => [
    ...
    Barryvdh\Debugbar\ServiceProvider::class,
'aliases' => [
    ...
    'Debugbar'         => Barryvdh\Debugbar\Facade::class,

为什么会出现这个错误，以及如何修复？

谢谢!

Answer 1

跑前

composer install --no-dev

1)清除上述引导/缓存子目录2)删除/供应商/目录(如果有)从config/app.php所有行中删除：

Barryvdh\Debugbar