We are trying to migrate a Google App Engine Java 8 app to Java 11 using legacy bundled services. We are using the Cloud Tools 4 Eclipse (CT4E) to deploy the app. We've made the appengine-web.xml changes and updated to Java 11 in Eclipse. But when we go to deploy we get the following error. This is strange as its already on java8 and we are moving to java11.
Any ideas or suggestions on how to update the App Engine runtime used by Eclipse?
