Error when running the app.

[ribesh-code]

Error:

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:mergeExtDexDevelopmentDebug'.
> Could not resolve all files for configuration ':app:developmentDebugRuntimeClasspath'.
   > Failed to transform concurrent-futures-1.2.0.jar (androidx.concurrent:concurrent-futures:1.2.0) to match attributes {artifactType=android-dex, asm-transformed-variant=NONE, dexing-enable-desugaring=true, dexing-enable-jacoco-instrumentation=false, dexing-is-debuggable=true, dexing-min-sdk=26, org.gradle.category=library, org.gradle.dependency.bundling=external, org.gradle.jvm.version=8, org.gradle.libraryelements=jar, org.gradle.status=release, org.gradle.usage=java-runtime}.

Environment :

 Kotlin version: 1.9.25
 Flutter version: 3.22.2
 native_geofence: 1.0.3

[orkun1675]

Hi @ribesh-code what version of Gradle are you running? You can see your Gradle version in android/gradle/wrapper/gradle-wrapper.properties and your Android Gradle Plugin version in android/build.gradle's classpath 'com.android.tools.build:gradle:xxx line.

I believe the error you are seeing might mean that your Gradle version is old. Are you able to upgrade your Gradle?

The latest Android Gradle Plugin version can be found here: https://mvnrepository.com/artifact/com.android.application/com.android.application.gradle.plugin --> which is 8.7.3 at the time of writing this. This requires Gradle 8.9 per the instructions here.

If you are unable to upgrade Gradle I can look into downgrading the min Gradle requirement of the plugin.

[ribesh-code]

Hi @orkun1675,
Sorry for the late reply, and thank you for your help! 🙇

After upgrading my Gradle version as suggested, the build issue was resolved. However, I encountered an issue with my current Java version (Java 21) after switching to Java 17 the app ran successfully.