ionic 4 google server error

# Cannot add task ':app:processDebugGoogleServices' as a task with that name already exists.

### remove android platform

ionic cordova platform rm android

file plugins/cordova-plugin-fcm/src/android/FCMPlugin.gradle
dependencies {
    compile 'com.google.firebase:firebase-core:10.+'
}
// apply plugin: 'com.google.gms.google-services'
// class must be used instead of id(string) to be able to apply plugin from non-root gradle file
apply plugin: com.google.gms.googleservices.GoogleServicesPlugin

### Replace with this

dependencies {
    compile 'com.google.firebase:firebase-core:11.8.0'
}
// apply plugin: 'com.google.gms.google-services'
// class must be used instead of id(string) to be able to apply plugin from non-root gradle file
// apply plugin: com.google.gms.googleservices.GoogleServicesPlugin
ext.postBuildExtras = {
    if (project.extensions.findByName('googleServices') == null) {
        // apply plugin: 'com.google.gms.google-services'
        // class must be used instead of id(string) to be able to apply plugin from non-root gradle file
        apply plugin: com.google.gms.googleservices.GoogleServicesPlugin
    }
}


### in ---> plugins/cordova-plugin-fcm-with-dependecy-updated/plugin.xml

<framework src="com.google.firebase:firebase-core:10.+" />
<framework src="com.google.firebase:firebase-messaging:10.+" />

### Replace with this
# check line number 61 and 62
        <framework src="com.google.firebase:firebase-core:11.8.0" />
        <framework src="com.google.firebase:firebase-messaging:11.8.0" />
        
        
### then add platform ionic cordova platform add android

### manually clone the google-services.json to platforms/android/app