The most likely cause of this error is that the iOS project has not yet been linked with the shared_preferences plugin. This error occurs because the iOS project cannot find the channel that the Flutter code is trying to access.
To solve this issue, you need to add the shared_preferences dependency to your project's pubspec.yaml file and then run the following command in your terminal:
flutter packages get
After the command has completed successfully, you should rebuild your Flutter project so that the necessary framework code is generated for iOS. Finally, rerun your application and see if the error has been resolved.
