So if you've ever loaded Bauble before you might have a stale and no-longer-working version of the tutorial cached in localStorage -- if you just clear out the script and refresh it will restore the default one. If that's still erroring, please let me know!
Oh yeah if you clear localStorage like from dev tools, Bauble will re-save the script before refresh, putting it right back where it was. But if you like cmd-a backspace to empty the contents of the script and then refresh it’ll load the default.