NPE in org.jboss.as.webservices.invocation.AbstractInvocationHandler.invoke

2017-01-30 17:23:57,588 WARNING [org.apache.cxf.phase.PhaseInterceptorChain] (default-workqueue-1) Application {http://www.jboss.org/jbossws/ws-extensions/wsrm}ReliableService#{http://www.jboss.org/jbossws/ws-e
xtensions/wsrm}writeLogMessage has thrown exception, unwinding now: org.apache.cxf.interceptor.Fault
        at org.apache.cxf.service.invoker.AbstractInvoker.createFault(AbstractInvoker.java:162)
        at org.apache.cxf.jaxws.AbstractJAXWSMethodInvoker.createFault(AbstractJAXWSMethodInvoker.java:267)
        at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:128)
        at org.apache.cxf.jaxws.AbstractJAXWSMethodInvoker.invoke(AbstractJAXWSMethodInvoker.java:232)
        at org.apache.cxf.jaxws.JAXWSMethodInvoker.invoke(JAXWSMethodInvoker.java:85)
        at org.jboss.wsf.stack.cxf.JBossWSInvoker.invoke(JBossWSInvoker.java:145)
        at org.apache.cxf.interceptor.ServiceInvokerInterceptor$1.run(ServiceInvokerInterceptor.java:59)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at org.apache.cxf.interceptor.ServiceInvokerInterceptor$2.run(ServiceInvokerInterceptor.java:126)
        at org.apache.cxf.workqueue.SynchronousExecutor.execute(SynchronousExecutor.java:37)
        at org.apache.cxf.interceptor.ServiceInvokerInterceptor.handleMessage(ServiceInvokerInterceptor.java:131)
        at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)
        at org.apache.cxf.phase.PhaseInterceptorChain.resume(PhaseInterceptorChain.java:278)
        at org.apache.cxf.ws.addressing.impl.InternalContextUtils$1.run(InternalContextUtils.java:321)
        at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$3.run(AutomaticWorkQueueImpl.java:428)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$AWQThreadFactory$1.run(AutomaticWorkQueueImpl.java:353)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
        at org.jboss.as.webservices.invocation.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:109)
        at org.jboss.wsf.stack.cxf.JBossWSInvoker.performInvocation(JBossWSInvoker.java:169)
        at org.apache.cxf.service.invoker.AbstractInvoker.invoke(AbstractInvoker.java:96)
        ... 17 more

2017-01-30 17:23:57,460 SEVERE [org.apache.cxf.ws.rm.RMCaptureOutInterceptor] (default task-19) Error persisting message: javax.xml.stream.XMLStreamException: Trying to write END_DOCUMENT when document has no r
oot (ie. trying to output empty document).
        at com.ctc.wstx.sw.BaseStreamWriter.throwOutputError(BaseStreamWriter.java:1584)
        at com.ctc.wstx.sw.BaseStreamWriter.reportNwfStructure(BaseStreamWriter.java:1613)
        at com.ctc.wstx.sw.BaseStreamWriter._finishDocument(BaseStreamWriter.java:1439)
        at com.ctc.wstx.sw.BaseStreamWriter.close(BaseStreamWriter.java:247)
        at org.apache.cxf.staxutils.DelegatingXMLStreamWriter.close(DelegatingXMLStreamWriter.java:35)
        at org.apache.cxf.ws.rm.CapturingXMLWriter.getOutputStream(CapturingXMLWriter.java:397)
        at org.apache.cxf.ws.rm.RMCaptureOutInterceptor$CaptureEnd.handleMessage(RMCaptureOutInterceptor.java:271)
        at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)
        at org.apache.cxf.interceptor.OutgoingChainInterceptor.handleMessage(OutgoingChainInterceptor.java:83)
        at org.apache.cxf.phase.PhaseInterceptorChain.doIntercept(PhaseInterceptorChain.java:308)
        at org.apache.cxf.transport.ChainInitiationObserver.onMessage(ChainInitiationObserver.java:121)
        at org.apache.cxf.transport.http.AbstractHTTPDestination.invoke(AbstractHTTPDestination.java:252)
        at org.jboss.wsf.stack.cxf.RequestHandlerImpl.handleHttpRequest(RequestHandlerImpl.java:109)
        at org.jboss.wsf.stack.cxf.transport.ServletHelper.callRequestHandler(ServletHelper.java:134)
        at org.jboss.wsf.stack.cxf.CXFServletExt.invoke(CXFServletExt.java:88)
        at org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:299)
        at org.apache.cxf.transport.servlet.AbstractHTTPServlet.doPost(AbstractHTTPServlet.java:218)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
        at org.jboss.wsf.stack.cxf.CXFServletExt.service(CXFServletExt.java:136)
        at org.jboss.wsf.spi.deployment.WSFServlet.service(WSFServlet.java:140)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
        at io.undertow.servlet.handlers.ServletHandler.handleRequest(ServletHandler.java:85)
        at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62)
        at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
        at org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:78)
        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
        at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:131)
        at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57)
        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
        at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46)
        at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64)
        at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60)
        at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77)
        at io.undertow.security.handlers.NotificationReceiverHandler.handleRequest(NotificationReceiverHandler.java:50)
        at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43)
        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
        at org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
        at org.wildfly.extension.undertow.deployment.GlobalRequestControllerHandler.handleRequest(GlobalRequestControllerHandler.java:46)
        at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43)
        at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:292)
        at io.undertow.servlet.handlers.ServletInitialHandler.access$100(ServletInitialHandler.java:81)
        at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:138)
        at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135)
        at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48)
        at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43)
        at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1698)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1698)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1698)
        at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1698)
        at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:272)
        at io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:81)
        at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:104)
        at io.undertow.server.Connectors.executeRootHandler(Connectors.java:210)
        at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:809)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:745)