display issue after update

Hi, I’ve just updated the plugin to the latest version and my testimonials are now sitting as a long list on top of each other instead of a slider. I’ve tried deactivating all other plugins to see if there’s a conflict, and I’ve noticed this error in console – https://snipboard.io/ewxnqP.jpg

Are you able to help?

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