I cannot say for sure what is the root cause, I may need to dive into the code. A general advice is to update Plugin POM and dependencies to get a newer test environment and to ensure it is not a historical issue. Some issues may go away after that so that you do not spend time on investigating.
Ok, so update. Fixed an issue where JDK was not defined. Now I am stuck at RequireUpperBoundDeps error. I upgraded to my understanding all the plugin dependencies. But it still fails. Is there some tool to evaluate? Or could someone explain how I am suppose to understand what needs to be fixed?