Hi, I am also facing the same issue. Here I would like to share with all of you how i fixed it. Although this is not a permanent solution but still it will be helpful until we get the official response and hence permanent solution.
I installed a WordPress plugin named WP – Downgrade and downgraded my wordpress to the last version i.e. 5.4.2 and now the slider starts working again.
If any of you have any permanent solution, then please do share. Thanks
