Multiple dex files define Lcom/google/android/gms/internal/zzau

Question

I get the error com.android.dex.DexException: Multiple dex files define Lcom/google/android/gms/internal/zzau; when i run my app The gradle files are

ap

Answer 1

I encountered the same issue after manually adding Firebase to my app.
For me the solution was changing:

classpath 'com.google.gms:google-services:3.2.0'

to:

classpath 'com.google.gms:google-services:3.0.0'

in the root-level build.gradle file.