Error from Companion: invoke: no method named `Namespace' in class com.google.appinventor.components.runtime.TinyDB

General Discussion
1

Italiano:
Quando provo ad avviare l'emulatore mi esce l'errore indicato in oggetto: la questione è che la propretà Namespace l'ho nominato a design time.
Perchè visualizza quell'errore?

English:
When I try to start the emulator I get the error indicated in the subject: the problem is that I named the Namespace property at design time.
Why does it display that error?

2

What version of the companion are you using? That property was added some time ago and should be available in both the Android and iOS versions.