I have a few marketplace items, such as the Chinese Mythology Mashup Pack, that won't update. It used to have an error that read that there was not enough storage, but it disappeared. Storage has never been an issue with my 258GB MicroSD in my Switch, and even the base console storage has over 20GB free. I don't know what's going on, but I am hoping that a dev or bug fixer can know about this bug and are able to fix it, because, as far as I know, I'm not the only one with this issue.