Mac brew Error: Cannot tap homebrew/cask: invalid syntax in tap!

场景：Mac安装docker


brew install --cask docker

报错信息：


Error: Cannot tap homebrew/cask: invalid syntax in tap!

查看brew版本


yunjingios@jimmy-2 ~ % brew -v
Homebrew 3.2.15
Homebrew/homebrew-core (git revision 1420da255f9; last commit 2021-10-08)

更新brew版本

brew update

问题解决。