Execution failed for task ':amplitude_flutter:compileDebugKotlin'. (Android Gradle 8)

[ssorrychoi]

I upgraded flutter sdk version 3.19.1 , Android gradle version 8
But I got this error.

{project}/app/build.gradle
...
compileOptions {
coreLibraryDesugaringEnabled true
sourceCompatibility JavaVersion.VERSION_17
targetCompatibility JavaVersion.VERSION_17
}
kotlinOptions {
jvmTarget = '17'
}
...

* What went wrong:
Execution failed for task ':amplitude_flutter:compileDebugKotlin'.
> Inconsistent JVM-target compatibility detected for tasks 'compileDebugJavaWithJavac' (1.8) and 'compileDebugKotlin' (17).

  Consider using JVM Toolchain: https://kotl.in/gradle/jvm/toolchain
  Learn more about JVM-target validation: https://kotl.in/gradle/jvm/target-validation 

Environment

amplitude_flutter: ^3.16.2
Flutter Sdk: 3.19.1
Device: SM F707N
Device OS and Version: Android 13

[MagTuxGit]

Try adding to your gradle.properties:
kotlin.jvm.target.validation.mode = IGNORE
That helped me.

[louisdeveseleer]

Same problem!
The solution from MagTuxGit finally unblocked the situation, after hours of looking for a fix, but it feels like a hacky workaround rather than a real solution and I'm not sure about the possible implications of ignoring the jvm version validation step...

It seems like Amplitude need to fix something on their side.

[Akhrameev]

Thank you, @MagTuxGit You've shared an amazing suggestion!

[hamishjohnson]

I don't get this error when I upgrade to amplitude_flutter 4 which is currently in pre-release https://amplitude.com/docs/sdks/analytics/flutter/flutter-sdk-4-0