Error: Permission denied @ apply2files

If you are getting the following brew cleanup error “Permission denied @ apply2files”, the top solution is to reset permissions to /user/local. We are going to rewrite permission to the current user. In your terminal copy and paste below.

sudo chown -R $(whoami):admin /usr/local/* \
&& sudo chmod -R g+rwx /usr/local/*

Another solution is to completely reinstall brew. User the code below to uninstall and reinstall.

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/uninstall)"
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Good luck!

For Mac OS X Mojave and above