zsh themes loaded but not working
Do you have a custom PS1 that is overriding the prompt from the theme you have selected?


Check you don't have any additional lines in ~/.zshrc beyond the default?


Backup your .zshrc
Delete all lines beyond export PATH=$PATH:/…
Reload your Terminal

Do you have any plugins that are messing with things?


Check ~/.oh-my-zsh/custom/plugins/ for any additional plugins.
Remove all your plugins from your ~/.zshrc and reload your Terminal.

Check you don't have any additional lines in your ~/.zprofile?

mv ~/.zprofile ~/.zprofile-bak


…and reload your Terminal. (Put back with mv ~/.zprofile-bak ~/.zprofile)


Note: trapd00r and linuxonly show the same errors for me