Lp not defined

Hi, I have a multi form script that worked in everypage until now.
But now I’m getting an error saying that the “lp” from the lp.jQuery is not defined.

Multistep form code: https://www.codepile.net/pile/er21qv8G

Validators code: https://www.codepile.net/pile/e73NxkAL

Page Link: https://aproveite.audicaodirecta.pt/website/como-escolher/