When deploying a new project under EAP 6.1.0 version, what I have seen is for the first two times, there is no such problem, but since the third time I stopped and started my project, there will be such "null" message in the log - Starting deployment of "null" (runtime-name: "demo.jar").

I removed demo.ear.deployed and added demo.ear.dodeploy and deploy it again, then the problem resolved. But when I restart the server, this problem happens again.

Here is the link I shot the problem in the forum.
https://community.jboss.org/message/807001