There is a new configuration in android folder that does not allow add this

[MartinBal97]

You will also need this:

classpath 'com.google.gms:google-services:4.3.10'
as a dependency in your android/build.gradle.

Originally posted by @russellwheatley in firebase/flutterfire#9785 (comment)

[thatfiredev]

@MartinBal97 can you please clarify what your issue is?