Carbon 1 is deprecated, see how to migrate to Carbon 2.
今天再次尝试安装 flarum 的时候就抱错了，错误信息如下
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.
修复方法简单，就是按照官方的提示来，运行下面的命令
./vendor/bin/upgrade-carbon
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