Why doesn't bootstrap 4 slider work?

Question

Layout

Why do bootstrap 4 sliders not work (do not respond to button presses and do not scroll themselves)? There are no serious errors in the console. One slider is displayed at desktop resolution and the rest at 320 px resolution. The slider code was taken from the Bootstrap 4.1 website. On other projects, everything is ok, but here, for some reason, they don’t work. I don’t even know what could have caused it (.
mug.devshift.co.uk

Answer 1

You have a problem loading jQuery on your page.
Replace the jquery call line with

<script src="https://code.jquery.com/jquery-3.3.1.min.js"></script>