Program type already present: com.google.android.gms.internal.zzfq

1. set implementation 'com.google.firebase:firebase-messaging:15.0.2' at the app level build.gradle file, if you are using firebase
2. set classpath 'com.google.gms:google-services:3.2.0' at the project level build.gradle file

Then sync the build.gradle files

I fix the same issue in my project - after updating the Kotlin plugin to 1.2.41 (I don't know if it is really related. Edit: apparently this is not related with Kotlin) - with :

classpath 'com.google.gms:google-services:3.2.1' 

https://developers.google.com/android/guides/google-services-plugin

Remark: I could stay with the unique 15.0.0 Google Play Services libraries version but not the play-services-tagmanager one and firebase :

implementation "com.google.android.gms:play-services-tagmanager:15.0.2"
implementation "com.google.firebase:firebase-core:15.0.2"

The project is compiling now.