Image doesn’t display.

I am using FooGallery Plugin and Foobox Plugin to display my images.
Except for the latest post, all images in earlier posts can display properly. Is it the problem with plugins? Tried to delete the image and re-upload with new file name, change the image size, and looking for solution online but still not able to solve. One thing I realised is when I inspect the image, I see this code div class=”fg-item fg-error”>. But when I inspect other images that can load and display properly, I see this code figcaption class=”fg-caption”>. Please help.

• This topic was modified 5 years, 1 month ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Everything else WordPress topic

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