I have enabled the image wall module which appears on the following pages and I don't hit any errors:

https://space.watch/space/featured
https://space.watch/space/collections
https://space.watch/space/astronomy-visual-dictionary
https://space.watch/space/big-bang

Where can I see the error and which module in particular did you unpublish / publish?

It seems to be loading fine now apart from this page: https://space.watch/space/astronomy-visual-dictionary
Some of the blog are missing the cover images in the module?

Regards,
Imran

Since you have already created a ticket on https://stackideas.com/forums/the-grid-layout-showcase-slider-does-not-show-the-cover-image , we'll check your issue there.

I will mark this thread as resolved since I cannot replicate this and neither can you. Anyway, if the problem still persists, please start a new thread and we'll look into this.