Error Failed to process phase POST_MODULE of deployment while updating from jboss6 to wildfly15 - jboss

Question

While upgrading from jboss6 to wildfly15 and from java6 to java8 in jsf project with hibernate ORM i faced some issues we solved it but we have another one
4:34:43,718 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-4) MSC000001: Failed to start service jboss.deployment.unit."nts.war".POST_MODULE: org.jboss.msc.service.StartException in service jboss.deployment.unit."nts.war".POST_MODULE: WFLYSRV0153: Failed to process phase POST_MODULE of deployment "nts.war"
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:151)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1738)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.execute(ServiceControllerImpl.java:1700)
at org.jboss.msc.service.ServiceControllerImpl$ControllerTask.run(ServiceControllerImpl.java:1558)
at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1985)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1487)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1364)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: java.lang.ClassNotFoundException: com.sun.xml.ws.transport.http.servlet.WSServlet from [Module "deployment.nts.war" from Service Module Loader]
at org.jboss.as.jaxrs.deployment.JaxrsScanningProcessor.checkDeclaredApplicationClassAsServlet(JaxrsScanningProcessor.java:437)
at org.jboss.as.jaxrs.deployment.JaxrsScanningProcessor.scanWebDeployment(JaxrsScanningProcessor.java:278)
at org.jboss.as.jaxrs.deployment.JaxrsScanningProcessor.deploy(JaxrsScanningProcessor.java:109)
at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:144)
... 8 more
Caused by: java.lang.ClassNotFoundException: com.sun.xml.ws.transport.http.servlet.WSServlet from [Module "deployment.nts.war" from Service Module Loader]
at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:255)
at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:410)
at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398)
at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:116)
at org.jboss.as.jaxrs.deployment.JaxrsScanningProcessor.checkDeclaredApplicationClassAsServlet(JaxrsScanningProcessor.java:435)
... 11 more
14:35:07,319 ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("deploy") failed - address: ([("deployment" => "nts.war")]) - failure description: {"WFLYCTL0080: Failed services" => {"jboss.deployment.unit.\"nts.war\".POST_MODULE" => "WFLYSRV0153: Failed to process phase POST_MODULE of deployment \"nts.war\"
Caused by: org.jboss.as.server.deployment.DeploymentUnitProcessingException: java.lang.ClassNotFoundException: com.sun.xml.ws.transport.http.servlet.WSServlet from [Module \"deployment.nts.war\" from Service Module Loader]
Caused by: java.lang.ClassNotFoundException: com.sun.xml.ws.transport.http.servlet.WSServlet from [Module \"deployment.nts.war\" from Service Module Loader]"}}
14:35:07,361 INFO [org.jboss.as.server] (ServerService Thread Pool -- 43) WFLYSRV0010: Deployed "nts.war" (runtime-name : "nts.war")
14:35:07,373 INFO [org.jboss.as.controller] (Controller Boot Thread) WFLYCTL0183: Service status report
WFLYCTL0186: Services which failed to start: service jboss.deployment.unit."nts.war".POST_MODULE: WFLYSRV0153: Failed to process phase POST_MODULE of deployment "nts.war"
14:35:07,483 INFO [org.jboss.as.server] (Controller Boot Thread) WFLYSRV0212: Resuming server
14:35:07,488 INFO [org.jboss.as] (Controller Boot Thread) WFLYSRV0060: Http management interface listening on http://127.0.0.1:9990/management
14:35:07,489 INFO [org.jboss.as] (Controller Boot Thread) WFLYSRV0051: Admin console listening on http://127.0.0.1:9990
14:35:07,490 ERROR [org.jboss.as] (Controller Boot Thread) WFLYSRV0026: WildFly Full 15.0.1.Final (WildFly Core 7.0.0.Final) started (with errors) in 70466ms - Started 372 of 583 services (1 services failed or missing dependencies, 324 services are lazy, passive or on-demand)
14:35:08,034 INFO [org.jboss.as.protocol] (management I/O-1) WFLYPRT0057: cancelled task by interrupting thread Thread[management-handler-thread - 1,5,management-handler-thread]

Answer 1

The root cause of the deployment is following exception
java.lang.ClassNotFoundException:
com.sun.xml.ws.transport.http.servlet.WSServletContextListener
I'm assuming you are deploying a JAX-WS web service and JAX-WS dependency library jaxws-rt.jar is missing. TO solve the issue download JAX-WS RI distribution,
unzip it and copy jaxws-rt.jar to your classpath.