Lightbox crashes on chrome.

My gallery has a lightbox option turned on and it doesn’t work on Chrome (I tried on Firefox and it’s working great). It directs to the image link instead, but a brief loading screen of lightbox is visible for a fraction of a second.

The console shows:
Uncaught TypeError: jQuery.get(…).success is not a function

Link to my gallery:
http://megamega.16mb.com/galeria/

https://wordpress.org/plugins/photo-gallery/