Navigate between screens with Compose: Android Basics with Compose

[DAMSanti]

URL of codelab
https://developer.android.com/codelabs/basic-android-kotlin-compose-navigation?hl=es_419#6

In which task and step of the codelab can this issue be found?
Convierte el título actual de la pantalla en un valor de CupcakeScreen. Debajo de la variable backStackEntry crea una variable utilizando val llamada currentScreen igual al resultado de llamar la función de clase valueOf() de CupcakeScreen, y pasa la ruta del destino de backStackEntry. Usa el operador elvis para proporcionar un valor predeterminado de CupcakeScreen.Start.name.

Describe the problem

This
backStackEntry?.destination?.route ?: CupcakeScreen.Start.name
should be replaced by this
backStackEntry.value?.destination?.route ?: CupcakeScreen.Start.name

Steps to reproduce?
3. See error...

[mikaere66]

It's already surrounded by val currentScreen = CupcakeScreen.valueOf()