Shellscript issue?

What does it mean for Panorama, if a shellscript results in an error: “The default interactive shell is now zsh”

Is the shellscript statement making an internal decision to use bash vs zsh, or is this a system level correction that needs to be made?

This is a MacOS system level change. You can temporarily switch the shell from zsh to bash by adding the lines in this article:

But it looks like you might be better off changing your script to zsh, so if bash goes away, your script will run.