Build failed: Namespace 'com.google.unity.ads' is used in multiple modules and/or libraries: :googlemobileads-unity:, :unityLibrary:GoogleMobileAdsPlugin.androidlib

[hung365dev]

Hello,

After updated Unity to 6000.4.4f1
I got a build failed with an exception below.

[:googlemobileads-unity:] C:\Users\xxx\.gradle\caches\9.1.0\transforms\30af69c29f2887673e70c8d8df67d979\workspace\transformed\jetified-googlemobileads-unity\AndroidManifest.xml Error:
	Namespace 'com.google.unity.ads' is used in multiple modules and/or libraries: :googlemobileads-unity:, :unityLibrary:GoogleMobileAdsPlugin.androidlib. Please ensure that all modules and libraries have a unique namespace. For more information, See https://developer.android.com/studio/build/configure-app-module#set-namespace
D:\Projects\project-test\Library\Bee\Android\Prj\IL2CPP\Gradle\launcher\src\main\AndroidManifest.xml Error:
	Validation failed, exiting

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':launcher:processReleaseMainManifest'.
> Manifest merger failed with multiple errors, see logs

There is no issue with 6000.4.3f1

Unity version:
6000.4.4f1 or 6000.4.5f1

Library version:
Google Mobile Ads for Unity 11.0.0

[NuruSystems]

I confirm the same error and also with both 6000.4.4f1 or 6000.4.5f1. I can also confirm that the build works when reverting to 6000.4.2f1.

[hung365dev]

We have been unable to build our project for over a week now due to this issue. This is a critical bug, and I believe it needs to be addressed as soon as possible. We really can't afford to wait any longer. Does anyone here know of a workaround or a fix for this while we wait for an official update?

[NuruSystems]

I tried all possible changes I could think of (editing gradle files, changing AdMob from unitypackage install to OpenUPM, etc. The only workaround for me was to downgrade my unity project to 6000.4.2.

[Fasmo-dev]

We have been unable to build our project for over a week now due to this issue. This is a critical bug, and I believe it needs to be addressed as soon as possible. We really can't afford to wait any longer. Does anyone here know of a workaround or a fix for this while we wait for an official update?

https://discussions.unity.com/t/info-android-gradle-9-1-0-agp-9-0-0-update-in-unity-6-4/1709062

Go to the .androidlib folder, open the AndroidManifest.xml and delete "package="com.google.unity.ads".

Then create a file called build.gradle inside the .androidlib folder and put this code inside:

apply plugin: 'com.android.library'

android {
namespace "com.google.unity.ads.manifest"
compileSdk 34

defaultConfig {
    minSdk 23
}

sourceSets {
    main {
        manifest.srcFile 'AndroidManifest.xml'
    }
}

}