尝试更新Homebrew时出现错误消息

Question

我试图在我的计算机上更新Homebrew，但是当我输入＆＃39; brew update＆＃39;我收到此错误消息：

Error: undefined method `close!' for nil:NilClass
Please report this bug:
https://github.com/Homebrew/homebrew/wiki/troubleshooting
/usr/local/Library/Homebrew/extend/pathname.rb:129:in `ensure in atomic_write'
/usr/local/Library/Homebrew/extend/pathname.rb:129:in `atomic_write'
/usr/local/Library/Homebrew/cmd/untap.rb:42:in `unlink_tap_formula'
/usr/local/Library/Homebrew/cmd/update.rb:24:in `update'
/usr/local/Library/brew.rb:134:in `<main>'

为什么会这样？如何修复此问题并使Homebrew在我的计算机上正常运行？ 谢谢！