zsh compinit: insecure directories

Question

What does it mean and how can I fix it?

zsh compinit: insecure directories, run compaudit for list.
Ignore insecure directories and continue [y] or abort compinit [n]?

Running the compaudit returns the follows:

There are insecure directories:
/usr/local/share/zsh/site-functions

Answer 1

None of the solutions listed worked for me. Instead, I ended up uninstalling and reinstalling Homebrew, which did the trick. Uninstall instructions may be found here: http://osxdaily.com/2018/08/12/how-uninstall-homebrew-mac/

Answer 2

compaudit | xargs chmod g-w

will do the trick, see http://www.wezm.net/technical/2008/09/zsh-cygwin-and-insecure-directories/

Answer 3

on Mojave, this did the trick : sudo chmod go-w /usr/local/share