[Fixedly Error #2]: The gallery you try to display is deleted or doesn't exist!

https://dogpen.com/?p=1295

[Fixedly Error #2]: The gallery you try to display is deleted or doesn’t exist!

At first it was almost working using the
7 – content_left_thumbnails,
the slider had images vertical instead of horizontal
and all the images appeared at once where the main image shows
and all the titles and descriptions printed at once.

I tried shutting off all the other plugins, and that is when the current error appeared.
[Fixedly Error #2]: The gallery you try to display is deleted or doesn’t exist!

https://www.ads-software.com/extend/plugins/fixedly/