En mi caso he tenido este error con ohMyZsh
[oh-my-zsh] Insecure completion-dependent directories detected: drwxrwxr-x 3 kikebeltran admin 96 16 ene 16:30 /usr/local/share/zsh drwxrwxr-x 5 kikebeltran admin 160 16 ene 17:35 /usr/local/share/zsh/site-functions [oh-my-zsh] For safety, we will not load completions from these directories until [oh-my-zsh] you fix their permissions and ownership and restart zsh. [oh-my-zsh] See the above list for directories with group or other writability. [oh-my-zsh] To fix your permissions you can do so by disabling [oh-my-zsh] the write permission of "group" and "others" and making sure that the [oh-my-zsh] owner of these directories is either root or your current user. [oh-my-zsh] The following command may help: [oh-my-zsh] compaudit | xargs chmod g-w,o-w [oh-my-zsh] If the above didn't help or you want to skip the verification of [oh-my-zsh] insecure directories you can set the variable ZSH_DISABLE_COMPFIX to [oh-my-zsh] "true" before oh-my-zsh is sourced in your zshrc file.
Solucionado ejecutando en consola:
chmod 755 /usr/local/share/zsh chmod 755 /usr/local/share/zsh/site-functions