Uncaught TypeError: Cannot read properties

Hi,

I receive an error when I click on icon to add a product to wishlist:

3e7ce1b……d11.js?ver=4dd11:14 Uncaught TypeError: Cannot read properties of undefined (reading 'fragments')
    at Object.success (3e7ce1b…….js?ver=4dd11:14:18)
    at c (jquery.min.js:2:25266)
    at Object.fireWith [as resolveWith] (jquery.min.js:2:26015)
    at l (jquery.min.js:2:77721)
    at XMLHttpRequest.<anonymous> (jquery.min.js:2:80204)
(anonymous)	@	3e7ce1b……d11.js?ver=4dd11:14
c	@	jquery.min.js:2
fireWith	@	jquery.min.js:2
l	@	jquery.min.js:2
(anonymous)	@	jquery.min.js:2
load (async)		
send	@	jquery.min.js:2
ajax	@	jquery.min.js:2
(anonymous)	@	967f832……3262.js?ver=63262:2
e.<computed>	@	967f832……3262.js?ver=63262:2
ce.<computed>	@	jquery.min.js:2
(anonymous)	@	3e7ce1b……dd11.js?ver=4dd11:6
dispatch	@	jquery.min.js:2
v.handle	@	jquery.min.js:2

3e7ce1b……d11.js is the whishlist plugin “frontend.js”, just handled by Litespeed cache.
967f832……3262.js is jQuery Migrate v3.4.1, also handled by Litespeed cache.

JQuery is loaded with high priority, long before the whislist frontend js.
Besides, whishlist js is delayed (not defered).

What could be the cause of this error ?

Thanks a lot for any help !
Best regards

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