How to initialize new class in magnific popup AJAX?

Question

AJAX

There is a popup form that pulls content from different pages on the site. But for some reason one class is not displayed (photos and slider) Tell me how to initialize the class for display in the popup window? If it is possible, then give the script, please.

Those. the page has text, photo, slider, various footnotes. connects everything except the slider and the photo - only the div and the class (from the photo and the slider) are in the code inspector, but are not displayed in the popup itself.

Thanks in advance !