Can you confirm these servers start up using the Java9 straight from the command line?
Your first error is a java-related issue and this is the first time I’ve heard of somebody using Java 9, so that would be the first place to start, I think.
Running a server from the command line will allow you to see much of the screen output that MineOS shields from you (because most of the time, what you need is the logging – which is shown – versus the stderr).