I don't think your Mac is set to use Bash or ZSH. Let's correct that.

1- Launch the Terminal application.
2- Enter this command to set ZSH as your default Terminal shell:
Code:
chsh -s /bin/zsh
You will be asked to enter your account password to proceed.
3- Only if (2) does not work, enter this command to set Bash as your default Terminal shell:
Code:
chsh -s /bin/bash
4- Quit the Terminal application.

After you do this, go back to Message #12 and try again.