apply plugin: \'com.android.application\' android { compileSdkVersion 28 defaultConfig { applicationId \"com.kaiboon0216gmail.homeownerstarterkit\"
Use "com.google.android.gms:play-services-ads:16.0.0", the new 17.1.1 change some code implementation, ie, you need do that in ur source too, or back to 16.0.0 for now...
will fix your error for while...