[Koha] Cover flow problem

[Toni Afandi]

Dear all,

We just migrated to Koha several months ago. I have difficulty displaying
cover flow.  I followed some instructions about it, including from Bywater
Solutions (
https://bywatersolutions.com/education/using-lists-to-populate-your-coverflow-on-the-opac),
or
https://libpowertech.blogspot.com/2019/06/how-to-koha-opac-new-arrivals-books.html
with no luck.
Are there some missing steps?
We are using Koha 20.11.06.000. Thanks in advance,

Warm regards,

*Toni Afandi*
*Librarian*
*STT SAAT*
*(Southeast Asia Bible Seminary)*
Jl. Bukit Hermon No 1, Tidar Atas
Malang, Jawa Timur 65151
Indonesia
www.seabs.ac.id