Slider not loading after update (just spinning logo)

hello,

since updating all my plugins i noticed the slider is no longer working. just a spinning logo.

i do get an error when inspecting the page. not sure if this is the cause?

please help.

thank you.

Uncaught (in promise) TypeError: this.responsive.resizeResponsiveElements is not a function
at n.eval (eval at SmartSliderAbstract.__postInit (smartslider-frontend.min.js?1500871468:1), <anonymous>:13:25)
at HTMLDivElement.e (n2.js?1500877210:10)
at HTMLDivElement.dispatch (n2.js?1500877210:12)
at HTMLDivElement.r.handle (n2.js?1500877210:12)
at Object.trigger (n2.js?1500877210:12)
at HTMLDivElement.<anonymous> (n2.js?1500877210:12)
at Function.each (n2.js?1500877210:10)
at m.fn.init.each (n2.js?1500877210:10)
at m.fn.init.trigger (n2.js?1500877210:12)
at n.s.triggerResize (smartslider-frontend.min.js?1500871468:5)

The page I need help with: [log in to see the link]