I have a LINE chatbot which ask users to upload image using line://nv/cameraRoll/single. It's working in android and my iPhone 6 Plus, but is not working on iPhone XS Max, iOS version 12.4 and Line App version 9.15.1. It said "Unable to connect. Update to the latest version of LINE or recheck the URL". Uploading via upload button (beside the text input box) is working, so it's not about access permission.