cvc-complex-type.2.4.a: Invalid content found starting with element 'base-extension'. One of '{codename, tag}' is required

Question

If I change classpath 'com.google.gms:google-services:4.2.0' to classpath 'com.google.gms:google-services:4.3.10' and do gradle sync I get that error.

I am using gradle plugin version is 3.3.3, gradle JDK version 1.8, and the gradle version is 4.10.1.

I'm working on this to apply crashlytics and I don't know why. please help

cf.

ext {
    minSdkVersion = 23
    compileSdkVersion = 30
    targetSdkVersion = 30

    buildToolsVersion = '30.0.2'
    supportLibraryVersion = '28.0.0'

    playSdkVersion = '8.4.0'
    firebaseVersion = '17.3.4'
    coroutineVersion = '1.0.1'

    imageLoaderSdkVersion = '1.9.3'

    appCompatVersion = '1.0.0'
    recyclerViewVersion = "1.0.0"
    mockitoVersion = "2.28.2"

    lifecycleVersion = "2.2.0"
}

---

I also get the below error.

com.intellij.openapi.externalSystem.model.ExternalSystemException: Could not create task ':app:processDebugGoogleServices'.
Cannot create a proxy class for abstract class 'GoogleServicesTask'.
> Could not create task ':app:processDebugGoogleServices'.
  Cannot create a proxy class for abstract class 'GoogleServicesTask'.

java.lang.reflect.UndeclaredThrowableException (no error message)
> java.lang.reflect.InvocationTargetException (no error message)

Answer 1

I upgraded the gradle version as follows and it was solved.

classpath 'com.android.tools.build:gradle:4.1.3'