I have installed the latest version of SP Page and as a template I have installed rythm.

when I open the user registration page, the page doesn't work because I get the following error:

Uncaught TypeError: document.formvalidator is undefined

nel file on line 155: /media/system/js/fields/passwordstrength.js

in rythm/html/com_users/registration/default.php

HTMLHelper::_('behavior.formvalidator')

is correctly called in the template;

I look forward to your response, thank you