Lottie works in preview, but invisible in editor and iOS App

All of my lottie files are only visible on the preview, are not appearing in the editor, nor when implemented on iOS with Swift. Other animations work properly when implemented. Is there something I am doing wrong when exporting? Any help would be really appreciated, I am banging my head against the wall trying to get these to work! These are my Lottie animations I am experiencing the issue with…

Thank you!!

Do they also not display when previewing on the iOS app?

They don’t, I was speaking with the programmer, they did not have the image assets with the .json. Since it uses image assets, and those were missing I’m guessing that’s why it wasn’t appearing, from what I understand those need to go next to the .json file, correct?

Edit: Thank you for your response!