I use Oh My ZSH as my terminal shell. From time to time, Oh My ZSH will ask if I want to update it. This morning when I got the prompt and said, “Yes”. I immediately got an error that looked like this:
[Oh My Zsh] Would you like to check for updates?
Type Y to update oh-my-zsh: y
Upgrading Oh My Zsh
Agreeing to the Xcode/iOS license requires admin privileges, please re-run as root via sudo.
There was an error updating. Try again later?
Turns out I was getting this error because the Command Line Tools for OS X were updated on my machine.
To fix this error, I simply had to fire up Xcode and accept the Xcode license. Doing so will require admin privileges. Once I had accepted the license, I ran upgrade_oh_my_zsh in Terminal and the upgrade ran without errors.