问题
I can't find any solution on the Google.
wanglangdeMacBook-Pro:Cellar wanglang$ brew install mongodb
Error: mongodb: unknown version :mountain_lion
Thx!
回答1:
Your machine is toooooooo old ;)
Homebrew only support the latest version of macOS (macOS 10.12 Mojave) and support the previous 3 generation (macOS 10.9-10.11) on a "best-effort" basis.
My recommendation is that you should upgrade your machine to the latest macOS Mojave.
来源：https://stackoverflow.com/questions/54900608/unable-to-brew-install-mongodb-on-mac-os-10-12