Help! Lightbox won’t display image

hi

I have big problem where lightbox will not display image. It just display dark background with navigation arrows. I tried Mason and Custom Grid and both failed showing image.

Here is example of my post with gallery. If you click on image – lightbox pop up with no images shown.
https://sweetdreamsstudio.com/photography-cameron-bar-mitzvah-vibe-riverdale/

I really like cool custom grid resize feature. I have the free version Modula and I plan to buy the pro version if someone can fix my lightbox.

I have 2 sizes of all my images – 768×512 and 190×127
I don’t know if it doesn’t like my sizes

The page I need help with: [log in to see the link]