Unity打包Android时报错：Execution failed for task ‘:launcher:checkReleaseDuplicateClasses‘

一般是库重复的问题，具体根据提示查看是什么库重复

报错信息：

1: Task failed with an exception.
-----------
* What went wrong:
Execution failed for task ':launcher:checkReleaseDuplicateClasses'.
> A failure occurred while executing com.android.build.gradle.internal.tasks.CheckDuplicatesRunnable
   > Duplicate class com.google.unity.ump.UnityConsentForm found in modules jetified-googlemobileads-unity-runtime (:googlemobileads-unity:) and jetified-ump-release-runtime (:ump-release:)
     Duplicate class com.google.unity.ump.UnityConsentFormCallback found in modules jetified-googlemobileads-unity-runtime (:googlemobileads-unity:) and jetified-ump-release-runtime (:ump-release:)
     
     Go to the documentation to learn how to Fix dependency resolution errors.

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.

报错显示问题在com.google.unity.ump上。

因为项目里面接入了max广告，而且导入了GoogleMobileAds文件，里面的Assets/Plugins/Android/googlemobileads-unity.aar包含了com.google.unity.ump。

而Google UMP Unity插件里面（Assets/GoogleUmp/Plugins/Android/ump-release.aar）也包含了com.google.unity.ump。

导致重复

因为新版的max广告的GoogleMobileAds包含了ump，所以我把GoogleUmp删掉了。

这是我的情况，提供做为参考