ERROR Targeting S+ (version 31 and above) FLAG_IMMUTABLE OR FLAG_MUTABLE

Buenas tardes,
Inicialmente me gustaría felicitarlos por su página MIT app inventor 2 ya que gracias a ella he podido aprender a programar aplicaciones para uso personal. Una de ellas la desarrolle desde hace 2 años. Y la aplicación la utilice en dispositivos desde el Android 8 hasta el Android 12 sin ningún tipo de problema.
Esta misma aplicación la actualice sutilmente, ya que tenía unos pequeños errores.
Pero al intentar actualizar la app no me lo permite, argumentando que el paquete no es válido


. Desinstale la vieja app e instale la nueva y cómo puede evidenciarse en la imágen me da error de funcionalidad

.

Me gustaría que me pudieran colaborar para arreglar este problema.
Agradezco mucho su atención y respuesta.

Are you using the texting component?
If not, which extensions are you using?
Taifun

sorry to bother but I received the same error when I use App inventor Serial component. The error appears with android 12 and 13 but not with android 11.
I have written in another chat too, the problem was identified and, reading the chat, it was solved but working in app inventor official site, I have the same problem, do you have any idea to solve it?
Thanks
Mirko

See here

for now, use the test server which has the fix (you also need to use the test server companion app)

Thanks a loro, i tries to find the test server, I visited this link
http://nb190a-bugfixes.ai2-ewpatton-temp.appspot.com/#5943822726987776

This is an app inventor platform, i uploaded my project buy It cannot build the project...
The platform is not more Active....
Can you indicate me the correct server test please?

What is the test server and its companion. i have only companion installed on my android phone.

No longer working. tried myself also

this link might work. Use the test server at http://ai2-test.appinventor.mit.edu.ezproxy.canberra.edu.au/