My app is built in flutter and has a native Widget in it. The widget's Info.plist file has the NSExtensionPrincipalClass key that links to the VerseOfTheDayWidgetBundle as string. However the Transport app throws an error:
Validation failed (409) Unexpected Info.plist key. Unexpected key NSExtensionPrincipalClass found in extension Info.plist for Payload/Runner.app/PlugIns/VerseOfTheDayWidgetExtension.appex. (ID: 266e2dd8-44b9-4d67-97d9-d7d47013cff9)
Now I tried removing the NSExtensionPrincipalClass and but the simulator throws an error asking for the NSExtensionPrincipalClass or Storyboard class but my widget is completely written in SwiftUI and does not have a storyboard which is why I am using the NSExtensionPrincipalClass. I tried to bypass this by creating two info.plist files for my widget (debug and release) this bypassed the security check on Transporter but then the app wouldn't install in TestFlight confirming the same issue as the simulator.
I can confirm that my app's info.plist does not have any mention of NSExtensionPrincipalClass. so that isn't what is causing this error.
I tried a lot of things but it just wouldn't work, at this point I feel maybe its something wrong with the checks Transporter app. I'm not sure, please guide me.
The widget and the app work completely fine on the simulator with the NSExtensionPrincipalClass, its just the Transporter that does not like it being there.