How to build ios app with Flet(Flutter - Python)?

I wanted to try Flet (Flutter package for Python) to test how to build iOS app. But i have encounter this error :

Failed to build iOS app

Error (Xcode): lib/main.dart💯43: Error: The argument type 'List<dynamic>' can't be assigned to the parameter type 'List<Widget? 
Function(CreateControlArgs)>?'.

Encountered error while archiving for device.

Error building Flet app - see the log of failed command above.

Simple step to reproduce :

> flet create myapp

> cd myapp

> flet build ipa

Solution

The issue has been fixed by a contributor.

Github issue : https://github.com/flet-dev/flet/issues/2646