Execution failed for task '...compileDebugJavaWithJavac

I'm facing a build issue for every module:

```* What went wrong:
Execution failed for task ':helloworld:common:compileDebugJavaWithJavac'.
> Failed to calculate the value of task ':helloworld:common:compileDebugJavaWithJavac' property 'options.generatedSourceOutputDirectory'.
> Querying the mapped value of map(java.io.File property(org.gradle.api.file.Directory, fixed(class org.gradle.api.internal.file.DefaultFilePropertyFactory$FixedDirectory, /Users/jacekkwiecien/Projects/car-samples/car_app_library/helloworld/common/build/generated/ap_generated_sources/debug/out)) org.gradle.api.internal.file.DefaultFilePropertyFactory$ToFileTransformer@634f2d8c) before task ':helloworld:common:compileDebugJavaWithJavac' has completed is not supported
```

I have a JAVA_HOME env var set and pointing to the correct JAVA 8 jdk. Same is set in Android Studio SDK. ALso using jevn, all set to 1.8.

Been previously using JAVA 11, but changing all these didn't help.

Start by reproducing the reported :helloworld:common:compileDebugJavaWithJavac failure and compare the configured JAVA_HOME, Android Studio JDK, and Java 8 settings. Trace the options.generatedSourceOutputDirectory error across the affected modules; done means the sample builds successfully for every module without this task error.

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