I used the version via https://unpkg.com/swiper/swiper-bundle.min.js – it stopped working with todays update.
https://swiperjs6.4.9-bug.jelley.fish/
Should be working like before.
Cannot read property 'addClass' of undefined.

I'm having the same issue.
@nilskoppelmann temporary fix: <script src="https://unpkg.com/[email protected]/swiper-bundle.min.js"></script>
@j3ll3yfi5h in your example you try to init none existent slider, you shouldn't do it
@nolimits4web "closed" means it is my problem? or are you going to fix it?
It was working without any problems until 2-3 hours ago or more, but I solved by removing { init: true } part.
Same issue today
Same issue for me too
Most helpful comment
@nilskoppelmann temporary fix:
<script src="https://unpkg.com/[email protected]/swiper-bundle.min.js"></script>