Why does Fancybox duplicate the first image?

Question

JavaScript

Hello! The problem is the following - the site has 4 cards, by clicking on which opens its own Fancybox gallery. When opening the gallery, the first photo is duplicated, i.e. goes under number 1 and 2.

https://codepen.io/willi-schiebelhut/pen/qBjomQX

Answer 1

Can it be like this