Salient Nectar Slider not functioning with update to WP 5.8.3

I just updated a website (Salient theme) to WP 5.8.3 and the Nectar Slider is no longer working. Any ideas how to troubleshoot?

Hi @michellebea,

Please contact the author of your purchased theme, the theme author will assist you.

How to contact an author to get support or for any technical query:

Thanks