Android Build FAILURE: Failed to transform inmobi-10.7.7.0.aar

[liiyau]

• Unity version: 2020.3.48f1
• Google Mobile Ads Unity plugin version: 9.2.0
• Plugin installation method: .unitypackage import
• Platform: Android

FAILURE: Build failed with an exception.

• What went wrong:
  Could not determine the dependencies of task ':launcher:lintVitalRelease'.

Could not resolve all artifacts for configuration ':launcher:debugRuntimeClasspath'.
Failed to transform inmobi-10.7.7.0.aar (com.google.ads.mediation:inmobi:10.7.7.0) to match attributes {artifactType=android-manifest, org.gradle.category=library, org.gradle.libraryelements=jar, org.gradle.status=release, org.gradle.usage=java-runtime}.
> Execution failed for JetifyTransform: C:\Users\lbncf.gradle\caches\modules-2\files-2.1\com.google.ads.mediation\inmobi\10.7.7.0\86c241245ef06471372e4b5f5cb6105dfe38e800\inmobi-10.7.7.0.aar.
> Failed to transform 'C:\Users\lbncf.gradle\caches\modules-2\files-2.1\com.google.ads.mediation\inmobi\10.7.7.0\86c241245ef06471372e4b5f5cb6105dfe38e800\inmobi-10.7.7.0.aar' using Jetifier. Reason: IllegalArgumentException, message: Unsupported class file major version 61. (Run with --stacktrace for more details.)
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[NVentimiglia]

Hi @liiyau I think you might be running into a compatibility conflict between gradle and java. Newer android libraries depend on newer gradle / java versions where older Unity engines use older versions of gradle / java and the Unity engine versions are not forward compatible. We are currently working on a doc describing the issue in debt.

As a work around I suggest you upgrade to a newer version of Unity (2023) or export the project to Android Studio and manually set the project to use Java 17 and a newer gradle version

https://stackoverflow.com/questions/69425829/unsupported-class-file-major-version-61-error

[NVentimiglia]

@liiyau can you update to the latest version (4.6.7) of the InMobi Unity plugin.

In a recent Android InMobi adapter, we updated the Android Gradle plugin version used for building the InMobi adapter.