Mac升级后homebrew异常

因为想要升级fvm,所以用到了brew,异常如下
Traceback (most recent call last):
10: from /usr/local/Homebrew/Library/Homebrew/brew.rb:23:in `<main>'
9: from /usr/local/Homebrew/Library/Homebrew/brew.rb:23:in `require_relative'
8: from /usr/local/Homebrew/Library/Homebrew/global.rb:28:in `<top (required)>'
7: from /usr/local/Homebrew/Library/Homebrew/global.rb:28:in `require'
6: from /usr/local/Homebrew/Library/Homebrew/os.rb:3:in `<top (required)>'
5: from /usr/local/Homebrew/Library/Homebrew/os.rb:21:in `<module:OS>'
4: from /usr/local/Homebrew/Library/Homebrew/os/mac.rb:58:in `prerelease?'
3: from /usr/local/Homebrew/Library/Homebrew/os/mac.rb:24:in `version'
2: from /usr/local/Homebrew/Library/Homebrew/os/mac.rb:24:in `new'
1: from /usr/local/Homebrew/Library/Homebrew/os/mac/version.rb:26:in `initialize'
/usr/local/Homebrew/Library/Homebrew/version.rb:368:in `initialize': Version value must be a string; got a NilClass () (TypeError)搭梯子找解决办法,需要升级
但事情并不简单
这一看什么鬼,怎么要去coding拉包呢??!!
这一看哪来的这玩意啊
运行以上4条指令,再看下好了没
貌似是好了,继续更新brew
这样就顺利更新了,没有TypeError的异常了。
最后更新于