inkan on Nostr: I'm at and the site looks extremely appealing. However, when I click on a title in ...

I'm at https://alex-catalogue.imwald.eu/ and the site looks extremely appealing.

However, when I click on a title in the book list (both on the main page and on the search page), I get a spinning wheel in the browser tab and otherwise nothing happens. Shouldn't the title be opening?

Maybe I'm doing it wrong or its currently under construction?