Plugin is stuck in Loading mode!

After a gallery is added, the link is set up to “Media File”, and the post updated, on the end-user side, when clicking on an image results in the lightbox being stuck in the little loading animation for a very long time without ever loading the pictures…. Please help

https://www.interprointernational.com

https://www.ads-software.com/extend/plugins/jquery-lightbox-balupton-edition/