Other users unable to access my public list

I have the following Titles List set as Public.
My Top 100 Movies:  https://www.imdb.com/list/ls050184468

When other users attempt to view it, they get:
This list is not public
The creator of this list has not enabled public viewing

I reported this problem before and it was fixed, but it is broken again.

I noticed in another conversation that someone said this problem may occur

if there is a link in the description to a website other than IMDB.
I have several IMDB lists that contain a link to the same YouTube playlist
(containing Trailers and Scenes from my Top 100 Movies)
but this is the only one of them that has been having this problem.
This is the only one where that particular link was at the top of my list of links
so, in case that makes a difference, I have moved it down in the list,
hoping that when it gets fixed again, it will stay fixed.