errors in  to setup SSL for management console.

steps followed:-

1)created keystore.jks  and placed in standalone configuration directory
2)connected to cli and followed below steps:-
/core-service=management/management-interface=http-interface:write-attribute(name=secure-socket-binding, value=management-https)

/core-service=management/management-interface=http-interface:undefine-attribute(name=socket-binding)

/core-service=management/security-realm=ManagementRealm/server-identity=ssl:add(keystore-path=server.keystore,keystore-relative-to=jboss.server.config.dir, keystore-password=upadmin, alias=webserver)

all success. but, we we restart server below errror returned.

errors:
===============

12:58:40,969 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-7) MSC000001: Failed to start service jboss.server.controller.management.securit
y_realm.ManagementRealm.key-manager: org.jboss.msc.service.StartException in service jboss.server.controller.management.security_realm.ManagementRealm
.key-manager: Failed to start service
        at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1936) [jboss-msc-1.1.5.Final-redhat-1.jar:1.1.5.Final-
redhat-1]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_79]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_79]
        at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_79]
Caused by: java.lang.NullPointerException: invalid null input
        at java.security.KeyStore.setEntry(KeyStore.java:1321) [rt.jar:1.7.0_79]
        at org.jboss.as.domain.management.security.JKSKeystore.load(JKSKeystore.java:118)
        at org.jboss.as.domain.management.security.JKSKeyManagerService.start(JKSKeyManagerService.java:100)
        at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1980) [jboss-msc-1.1.5.Final-redhat-1.jar:1.1
.5.Final-redhat-1]
        at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1913) [jboss-msc-1.1.5.Final-redhat-1.jar:1.1.5.Final-
redhat-1]