ERROR] 16:30:23.779 org.nutz.boot.NbApp.execute(NbApp.java:219) - something hap
pen!!
java.lang.NullPointerException
        at org.nutz.boot.starter.jetty.JettyStarter.start(JettyStarter.java:125)

        at org.nutz.boot.AppContext.startServers(AppContext.java:306)
        at org.nutz.boot.NbApp.execute(NbApp.java:205)
        at org.nutz.boot.NbApp.run(NbApp.java:178)
        at com.dd.MainLauncher.main(MainLauncher.java:10)
[ERROR] 16:30:23.811 org.nutz.boot.NbApp.run(NbApp.java:187) - something happen
java.lang.NullPointerException
        at org.nutz.boot.starter.jetty.JettyStarter.stop(JettyStarter.java:129)
        at org.nutz.boot.AppContext.stopServers(AppContext.java:315)
        at org.nutz.boot.NbApp._shutdown(NbApp.java:226)
        at org.nutz.boot.NbApp.run(NbApp.java:184)
        at com.dd.MainLauncher.main(MainLauncher.java:10)