Thanks for your reply @yisrael-wix . After further testing I discovered that this only happens in iOS (in all browsers) and in Safari on desktop (when published). On Android and all PC browsers works just fine.
I get the error every time I click. Nothing else is going on in the code. No looping of audio etc. Here is link (its currently being built). Just logo and two single audio clips: https://kmellen.wixsite.com/sheri-reda