problem: Failed to apply plugin [class 'com.google.gms.googleservices.GoogleServicesPlugin']
   > For input string: "11+"

solution:Go to src/platform/android/project.properties---->change the gms location and firebase-messaging version to 11.+


For apk size Highly increased problem(Due to camera scanner plugin - openCv libraries)
---------------------

Go to src/platform/android/app/build.gradle -> add  
ndk {
            abiFilters "armeabi-v7a", "arm64-v8a" // includes ARM SO files only, so no x86 SO file
        }
the above object inside of 

android {
    defaultConfig {