Jellyfin can't read books/ comics

Hi, I've got some comics in cbz file, and when i put them in the librarie I've got a cover and the name, so I think they are recognize. But when I want to read them and click on play I have an infinite loading. I have the plugins bookshelf and also generate an Comic Vine API Key for the plug in but i still won't work, anytips on how to solve this issue?