(RESOLVED) Ionic 5 emulator AVD Internet connection - error?

Hi, I’m trying use the emulator AVD, and my app to showed this error

@firebase/firestore: Firestore (7.16.0): Could not reach Cloud Firestore backend. Backend didn’t respond within 10 seconds.
This typically indicates that your device does not have a healthy Internet connection at the moment. The client will operate in offline mode until it is able to successfully connect to the backend.

How can emultaor my app with Firebase ?

Well, I done resolve this problem if someone has the same problem, my solution

I instaled all tools of google then work now