Following up regarding running with Google Cloud Platform (GCP), I’ve generated a JAR file that runs successfully with IntelliJ, however I am running into issues with the deploy to my AppEngine instance.

I’m debugging with the GCP team here: https://github.com/GoogleCloudPlatform/google-cloud-java/issues/3275.

In the meantime, I’ll see if it is feasible to simply host my working JAR on Digital Ocean.