[Hummingbird Pro] media gallery blocked when cached

Hi,

I have a bug on this page

https://www.bootaboo.fr/boutique/

Works fine when not cached, and if cached, the media doesn't open anymore in a lightbox , links direccly to the media page.

there is this in the console, linked apparently to wp simpla pay plugin.

public.min.js?ver=3.4.0:6 Uncaught TypeError: Cannot read property 'form' of undefined

at Object.setupCoreForm (public.min.js?ver=3.4.0:6)

at HTMLFormElement.<anonymous> (public.min.js?ver=3.4.0:6)

at Function.each (jquery.js?ver=1.12.4:2)

at a.fn.init.each (jquery.js?ver=1.12.4:2)

at Object.init (public.min.js?ver=3.4.0:6)

at HTMLDocument.<anonymous> (public.min.js?ver=3.4.0:6)

at i (jquery.js?ver=1.12.4:2)

at Object.fireWith [as resolveWith] (jquery.js?ver=1.12.4:2)

at Function.ready (jquery.js?ver=1.12.4:2)

at HTMLDocument.K (jquery.js?ver=1.12.4:2)

Thanks a lot for your support.

Miles.