“ignorando o cabeçalho X-Fire-Locale porque seu valor era nulo” Respostas de código

ignorando o cabeçalho X-Fire-Locale porque seu valor era nulo

Make sure the emulator is connected to the internet. Sometimes the wifi is on but doesnt connect to the interne

or

Have you enabled the Email/Password Sign-in method on your Firebase console?
  
or

android:usesCleartextTraffic="true"