macos – How do I create a custom dynamic wallpaper in Catalina?

I tried to set a custom dynamic wallpaper in Catalina, as I did in Mojave (which worked well), but my dynamic wallpaper displays the following option because you can see the image (broken).

Enter image description here

and if I want to change it the "Dynamic" option is not there!

Enter image description here

I tried to find the path of the default dynamic backgrounds and I could not paste the ".heic" files where the background image of Catalina is located. I also tried setting a default dynamic background image first and in dynamic mode. Then I switched to the custom wallpaper and did not work.

Has the dynamic background image format changed in Catalina OS?

How can I set a custom wallpaper in Catalina?

Link to the custom wallpaper