Does anybody know why I'm getting this error in my...

# android

[Fré Dumazy]

Does anybody know why I'm getting this error in my androidTest in kotlin?

Error:Execution failed for task ':app:transformClassesWithDexBuilderForDebugAndroidTest'.
> com.android.build.api.transform.TransformException: java.lang.IllegalStateException: Dex archives: setting .DEX extension only for .CLASS files