[FIXED] getting build error after updating ads dependencies to latest version

Issue

I am getting this build error while I am trying to run my application from the Android studio.

Execution failed for task ':app:checkDebugDuplicateClasses'.
> 1 exception was raised by workers:
  java.lang.RuntimeException: java.lang.RuntimeException: Duplicate class com.google.android.gms.internal.measurement.zzbs found in modules jetified-play-services-measurement-18.0.1-runtime.jar (com.google.android.gms:play-services-measurement:18.0.1) and jetified-play-services-measurement-sdk-api-18.0.3-runtime.jar (com.google.android.gms:play-services-measurement-sdk-api:18.0.3)
  Duplicate class com.google.android.gms.internal.measurement.zzl found in modules jetified-play-services-measurement-impl-18.0.1-runtime.jar (com.google.android.gms:play-services-measurement-impl:18.0.1) and jetified-play-services-measurement-sdk-api-18.0.3-runtime.jar (com.google.android.gms:play-services-measurement-sdk-api:18.0.3)
  Duplicate class com.google.android.gms.measurement.internal.zzfh found in modules jetified-play-services-measurement-base-18.0.3-runtime.jar (com.google.android.gms:play-services-measurement-base:18.0.3) and jetified-play-services-measurement-impl-18.0.1-runtime.jar (com.google.android.gms:play-services-measurement-impl:18.0.1)
  Duplicate class com.google.android.gms.measurement.internal.zzgl found in modules jetified-play-services-measurement-18.0.1-runtime.jar (com.google.android.gms:play-services-measurement:18.0.1) and jetified-play-services-measurement-base-18.0.3-runtime.jar (com.google.android.gms:play-services-measurement-base:18.0.3)
  Duplicate class com.google.android.gms.measurement.internal.zzgm found in modules jetified-play-services-measurement-18.0.1-runtime.jar (com.google.android.gms:play-services-measurement:18.0.1) and jetified-play-services-measurement-base-18.0.3-runtime.jar (com.google.android.gms:play-services-measurement-base:18.0.3)
  Duplicate class com.google.android.gms.measurement.internal.zzgn found in modules jetified-play-services-measurement-18.0.1-runtime.jar (com.google.android.gms:play-services-measurement:18.0.1) and jetified-play-services-measurement-base-18.0.3-runtime.jar (com.google.android.gms:play-services-measurement-base:18.0.3)
  Duplicate class com.google.android.gms.measurement.internal.zzgo found in modules jetified-play-services-measurement-18.0.1-runtime.jar (com.google.android.gms:play-services-measurement:18.0.1) and jetified-play-services-measurement-base-18.0.3-runtime.jar (com.google.android.gms:play-services-measurement-base:18.0.3)
  Duplicate class com.google.android.gms.measurement.internal.zzgp found in modules jetified-play-services-measurement-base-18.0.3-runtime.jar (com.google.android.gms:play-services-measurement-base:18.0.3) and jetified-play-services-measurement-impl-18.0.1-runtime.jar (com.google.android.gms:play-services-measurement-impl:18.0.1)
  Duplicate class com.google.android.gms.measurement.internal.zzgq found in modules jetified-play-services-measurement-base-18.0.3-runtime.jar (com.google.android.gms:play-services-measurement-base:18.0.3) and jetified-play-services-measurement-impl-18.0.1-runtime.jar (com.google.android.gms:play-services-measurement-impl:18.0.1)
  Duplicate class com.google.android.gms.measurement.internal.zzhs found in modules jetified-play-services-measurement-base-18.0.3-runtime.jar (com.google.android.gms:play-services-measurement-base:18.0.3) and jetified-play-services-measurement-impl-18.0.1-runtime.jar (com.google.android.gms:play-services-measurement-impl:18.0.1)
  Duplicate class com.google.android.gms.measurement.internal.zzhx found in modules jetified-play-services-measurement-base-18.0.3-runtime.jar (com.google.android.gms:play-services-measurement-base:18.0.3) and jetified-play-services-measurement-impl-18.0.1-runtime.jar (com.google.android.gms:play-services-measurement-impl:18.0.1)

this only happens after I update ads dependencies to the latest version

From :

implementation 'com.google.android.gms:play-services-ads:20.0.0'

To :

implementation 'com.google.android.gms:play-services-ads:20.4.0'

if I change it back to 20.0.0 then it's working fine I think the problem with the latest version 20.4.0

can anybody helps me please thanks in advance.

Solution

The release notes are not giving a hint.

I ended up using 20.3.0 for now which does not produce this error.

Answered By - Uwe Post