Default value for "realm" option in RealmUsersRolesLoginModule isn't set.

2016-08-04 10:58:19,415 DEBUG [org.jboss.security] (management task-9) PBOX00206: Login failure: javax.security.auth.login.LoginException: java.lang.NullPointerException
	at org.jboss.sasl.util.UsernamePasswordHashUtil.stringToByte(UsernamePasswordHashUtil.java:86)
	at org.jboss.sasl.util.UsernamePasswordHashUtil.generateHashedURP(UsernamePasswordHashUtil.java:131)
	at org.jboss.sasl.util.UsernamePasswordHashUtil.generateHashedHexURP(UsernamePasswordHashUtil.java:156)
	at org.jboss.sasl.util.UsernamePasswordHashUtil.generateHashedHexURP(UsernamePasswordHashUtil.java:162)
	at org.jboss.as.security.RealmUsersRolesLoginModule.createPasswordHash(RealmUsersRolesLoginModule.java:71)
	at org.jboss.security.auth.spi.UsernamePasswordLoginModule.login(UsernamePasswordLoginModule.java:263)
	at org.jboss.security.auth.spi.UsersRolesLoginModule.login(UsersRolesLoginModule.java:171)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at javax.security.auth.login.LoginContext.invoke(LoginContext.java:755)
	at javax.security.auth.login.LoginContext.access$000(LoginContext.java:195)
	at javax.security.auth.login.LoginContext$4.run(LoginContext.java:682)
	at javax.security.auth.login.LoginContext$4.run(LoginContext.java:680)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)
	at javax.security.auth.login.LoginContext.login(LoginContext.java:587)
	at org.jboss.security.authentication.JBossCachedAuthenticationManager.defaultLogin(JBossCachedAuthenticationManager.java:406)
	at org.jboss.security.authentication.JBossCachedAuthenticationManager.proceedWithJaasLogin(JBossCachedAuthenticationManager.java:345)
	at org.jboss.security.authentication.JBossCachedAuthenticationManager.authenticate(JBossCachedAuthenticationManager.java:323)
	at org.jboss.security.authentication.JBossCachedAuthenticationManager.isValid(JBossCachedAuthenticationManager.java:146)
	at org.jboss.as.security.service.SimpleSecurityManager.authenticate(SimpleSecurityManager.java:406)
	at org.jboss.as.security.service.SimpleSecurityManager.authenticate(SimpleSecurityManager.java:367)
	at org.jboss.as.security.service.SimpleSecurityManager.authenticate(SimpleSecurityManager.java:347)
	at org.jboss.as.domain.management.security.JaasCallbackHandler.handle(JaasCallbackHandler.java:174)
	at org.jboss.as.domain.management.security.SecurityRealmService$1.handle(SecurityRealmService.java:175)
	at org.jboss.as.domain.http.server.security.RealmIdentityManager.verify(RealmIdentityManager.java:162)
	at org.jboss.as.domain.http.server.security.RealmIdentityManager.verify(RealmIdentityManager.java:141)
	at io.undertow.security.impl.BasicAuthenticationMechanism.authenticate(BasicAuthenticationMechanism.java:161)
	at org.jboss.as.domain.http.server.security.AuthenticationMechanismWrapper.authenticate(AuthenticationMechanismWrapper.java:52)
	at io.undertow.security.impl.SecurityContextImpl$AuthAttempter.transition(SecurityContextImpl.java:239)
	at io.undertow.security.impl.SecurityContextImpl$AuthAttempter.transition(SecurityContextImpl.java:257)
	at io.undertow.security.impl.SecurityContextImpl$AuthAttempter.access$100(SecurityContextImpl.java:225)
	at io.undertow.security.impl.SecurityContextImpl.attemptAuthentication(SecurityContextImpl.java:124)
	at io.undertow.security.impl.SecurityContextImpl.authTransition(SecurityContextImpl.java:99)
	at io.undertow.security.impl.SecurityContextImpl.authenticate(SecurityContextImpl.java:92)
	at io.undertow.security.handlers.AuthenticationCallHandler.handleRequest(AuthenticationCallHandler.java:50)
	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)
	at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:802)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)

	at javax.security.auth.login.LoginContext.invoke(LoginContext.java:856)
	at javax.security.auth.login.LoginContext.access$000(LoginContext.java:195)
	at javax.security.auth.login.LoginContext$4.run(LoginContext.java:682)
	at javax.security.auth.login.LoginContext$4.run(LoginContext.java:680)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:680)
	at javax.security.auth.login.LoginContext.login(LoginContext.java:587)
	at org.jboss.security.authentication.JBossCachedAuthenticationManager.defaultLogin(JBossCachedAuthenticationManager.java:406)
	at org.jboss.security.authentication.JBossCachedAuthenticationManager.proceedWithJaasLogin(JBossCachedAuthenticationManager.java:345)
	at org.jboss.security.authentication.JBossCachedAuthenticationManager.authenticate(JBossCachedAuthenticationManager.java:323)
	at org.jboss.security.authentication.JBossCachedAuthenticationManager.isValid(JBossCachedAuthenticationManager.java:146)
	at org.jboss.as.security.service.SimpleSecurityManager.authenticate(SimpleSecurityManager.java:406)
	at org.jboss.as.security.service.SimpleSecurityManager.authenticate(SimpleSecurityManager.java:367)
	at org.jboss.as.security.service.SimpleSecurityManager.authenticate(SimpleSecurityManager.java:347)
	at org.jboss.as.domain.management.security.JaasCallbackHandler.handle(JaasCallbackHandler.java:174)
	at org.jboss.as.domain.management.security.SecurityRealmService$1.handle(SecurityRealmService.java:175)
	at org.jboss.as.domain.http.server.security.RealmIdentityManager.verify(RealmIdentityManager.java:162)
	at org.jboss.as.domain.http.server.security.RealmIdentityManager.verify(RealmIdentityManager.java:141)
	at io.undertow.security.impl.BasicAuthenticationMechanism.authenticate(BasicAuthenticationMechanism.java:161)
	at org.jboss.as.domain.http.server.security.AuthenticationMechanismWrapper.authenticate(AuthenticationMechanismWrapper.java:52)
	at io.undertow.security.impl.SecurityContextImpl$AuthAttempter.transition(SecurityContextImpl.java:239)
	at io.undertow.security.impl.SecurityContextImpl$AuthAttempter.transition(SecurityContextImpl.java:257)
	at io.undertow.security.impl.SecurityContextImpl$AuthAttempter.access$100(SecurityContextImpl.java:225)
	at io.undertow.security.impl.SecurityContextImpl.attemptAuthentication(SecurityContextImpl.java:124)
	at io.undertow.security.impl.SecurityContextImpl.authTransition(SecurityContextImpl.java:99)
	at io.undertow.security.impl.SecurityContextImpl.authenticate(SecurityContextImpl.java:92)
	at io.undertow.security.handlers.AuthenticationCallHandler.handleRequest(AuthenticationCallHandler.java:50)
	at io.undertow.server.Connectors.executeRootHandler(Connectors.java:202)
	at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:802)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)