I have been using your image on my Wetek Hub now for some time and it works great. But I just found out that when I update the library, the new films are not added to the database. I can find them through the file manager, but they do not show on the main page. My first guess is that there is something going wrong with retrieving the data from the movie database. Maybe they have updated their back end.
Is there a way I can test my hypothesis? And if true how can I fix the problem?
Unfortunately, the movie database addon has been marked as broken for a very long time in the official Kodi 18 addon repository. However, I don't know if there is a working movie scraper addon for Leia, because I've never used one, and I've never built a movie library.
EDIT: In the meantime, I tried the python-based TMDB scraper, and it works flawlessly for me. Your guess may be correct with the possible change of the API or some syntax thing on the server side, but unfortunately I probably won't be able to help with that, because I'm not a python expert at all. Moreover, Leia still uses Python2, and subsequent versions use Python3.