laravel-5 - 无法将 Carbon 1 升级到 Carbon 2

Question

我一直在从事 Laravel 项目。当我运行 composer 命令时，我总是收到警告，

Carbon 1 is deprecated, see how to migrate to Carbon 2. https://carbon.nesbot.com/docs/#api-carbon-2 You can run './vendor/bin/upgrade-carbon' to get help in updating carbon and other frameworks and libraries that depend on it.

然后我运行 ./vendor/bin/upgrade-carbon 但我有错误，

Uncaught Error: Class 'Composer\Composer' not found in .../vendor/nesbot/carbon/src/Carbon/Upgrade.php:131

我也尝试寻找解决方案，但找不到。
我真的需要帮助来继续我的项目。非常感谢。

Answer 1

将以下依赖项添加到您的 composer.json**:

{
  ...
  "require": {
    ...
    "kylekatarnls/laravel-carbon-2": "^1.0.0",
    "nesbot/carbon": "2.0.0-beta.2 as 1.25.0"
  }
  ...
}

然后运行:

composer update