Why is the slick not working?

Question

Slick

here it
seems that everything should immediately work, because everything is copied from the developer's site, but what's wrong?

Answer 1

The errors there are:

GET https://cdpn.io/boomboom/v2/slick/slick.min.js net::ERR_ABORTED 403
pen.js:3 Uncaught TypeError: $(...).slick is not a function

The developer connected the slick locally, but of course it is not in your demo (only pro accounts on the codepen can upload additional local files). So connect it from some cdn, like this:
or use an NPM package if you're putting it all together in your own way.