我正试图按照文档在Mac上安装Herokuhttps://devcenter.heroku.com/articles/heroku-cli#download-和安装，但我在运行安装heroku:的命令时遇到问题
MBP-de-Emixam23:~ emixam23$ brew install heroku
Updating Homebrew...
==> Installing heroku from heroku/brew
==> Downloading https://cli-assets.heroku.com/homebrew/node-12.16.2.tar.xz
Already downloaded: /Users/emixam23/Library/Caches/Homebrew/downloads/5787f9331a645901d1511ff2973c961e1037248779c2b5628ec2601273fb979b--node-12.16.2.tar.xz
==> Downloading https://cli-assets.heroku.com/heroku-v7.42.4/heroku-v7.42.4.tar.
Already downloaded: /Users/emixam23/Library/Caches/Homebrew/downloads/15cbf813f5f04cde9c65e953825e9514cfe5f571108d68a5284521d8592bcf4f--heroku-v7.42.4.tar.xz
==> Installing dependencies for heroku/brew/heroku: heroku/brew/heroku-node
==> Installing heroku/brew/heroku dependency: heroku/brew/heroku-node
Error: An exception occurred within a child process:
ArgumentError: user emixam23 doesn't exist
有什么想法吗？：o
感谢的帮助
在我的案例中，问题是由环境变量USER引起的。
要查明是否存在可能导致问题的env-var，请执行：
printenv | grep $TEXT_IN_ERROR
其中变量为以下值：
ArgumentError: user $TEXT_IN_ERROR doesn't exist