• I followed the guide at https://firebase.google.com/docs/admob/cpp/cocos2d-x.
  When i build debug mode, (debug.apk) it works fine , but when i build release mode , it error with log :

06-11 09:33:07.161 2083-2109/com.mygame.game1 E/FirebaseInstanceId: Google Play services missing or without correct permission.
06-11 09:33:07.353 2083-2111/com.mygame.game1 E/firebase: Java class com/google/firebase/FirebaseApp not found. Please verify the AAR which contains the com/google/firebase/FirebaseApp class is included in your app.
clazz
06-11 09:33:07.353 2083-2111/com.mygame.game1 A/firebase: Java class com/google/firebase/FirebaseApp not found. Please verify the AAR which contains the com/google/firebase/FirebaseApp class is included in your app.

*build.grade (Project:proj.android)
buildscript {
repositories {
google()
jcenter()
}

dependencies {
    classpath 'com.android.tools.build:gradle:3.1.2'
    classpath 'com.google.gms:google-services:4.0.0'

    // NOTE: Do not place your application dependencies here; they belong
    // in the individual module build.gradle files
}

}

allprojects {
repositories {
google()
jcenter()
}
}

*build.grade (Module App)
......
dependencies {

implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation project(':libcocos2dx')
implementation 'com.google.firebase:firebase-ads:15.0.1'
implementation 'com.google.firebase:firebase-core:16.0.0'

}

apply plugin: 'com.google.gms.google-services'

Is my application missing the firebase-ads-x-x.aar file ?

Can someone help me ? Thanks you very much!