Can you post a file listing of your app? Export the app from Xcode as an .ipa file for the App Store, and then run unzip -l /Path/To/YourApp.ipa, and post that output here. Make sure to use backticks to format as a code block, or if the listing is big, use the file attachment feature. Since your app is created with Flutter, a third-party tool, it's likely that you'll have to resolve this by working backwards from the build producing these errors into their tools, and you may need to talk to their support for help. My goal with the above is to at least point out more precisely why the app's bundle structure is wrong, to enable you to begin working backwards into their tools to correct for this. — Ed Ford, DTS Engineer
Topic:
App Store Distribution & Marketing
SubTopic:
TestFlight