I want to migrate an application from Wldfly 8 to the latest Wildfly 18. The web application uses the following frameworks: hibernate 3, seam 2.2, JSF 1.2, and Richfaces 3.3.3. Since hibernate 3 isn't supported anymore in Wildfly, we need to migrate to hibernate 4 which isn't compatible with Seam 2.2. Thus, we have to migrate to Seam 2.3 and this leads to migrating to JSF 2.3 (Wildfly modules) and to  Richfaces 4.

My project is an ear that contains inside it a war folder.

For JSF, I am using the supported module by Wildfly both com.sun.faces.impl and javax.faces.api. I also added jsf-facelets-1.1.15.jar as a jar under web-inf/lib.

For hibernate, I included the follwoing jars in my ear: hibernate-commons-annotations-4.0.5.Final.jar, hibernate-core-4.3.11.Final.jar, and hibernate-entitymanager-4.3.11.Final.jar.

For seam, I included the seam jars: jboss-seam.jar, jboss-seam-debug.jar, ...

For Richfaces, I inculed the following libraries under the war folder:  richfaces-a4j-4.5.17.Final.jar, richfaces-core-4.5.17.Final.jar, and richfaces-rich-4.5.17.Final.jar. I also included their dependencies.

I am still getting this error which I am not able to debug:

2020-01-29 11:00:28,027 SEVERE [javax.enterprise.resource.webcontainer.jsf.config] (ServerService Thread Pool -- 78) Critical error during deployment: : java.lang.NullPointerException

at com.sun.faces.application.ApplicationAssociate$PostConstructApplicationListener.processEvent(ApplicationAssociate.java:324)
at javax.faces.event.SystemEvent.processListener(SystemEvent.java:123)
at com.sun.faces.application.applicationimpl.Events.processListeners(Events.java:253)
at com.sun.faces.application.applicationimpl.Events.invokeListenersFor(Events.java:231)
at com.sun.faces.application.applicationimpl.Events.publishEvent(Events.java:112)
at com.sun.faces.application.ApplicationImpl.publishEvent(ApplicationImpl.java:127)
at org.jboss.seam.jsf.SeamApplication.publishEvent(SeamApplication.java:462)
at javax.faces.application.ApplicationWrapper.publishEvent(ApplicationWrapper.java:788)
at com.sun.faces.config.ConfigManager.publishPostConfigEvent(ConfigManager.java:553)
at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:264)
at io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:187)
at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:217)
at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:186)
at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42)
at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:4
at org.wildfly.extension.undertow.security.SecurityContextThreadSetupAction.lambda$create$0(SecurityContextThreadSetupAction.java:105)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)
at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:252)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:96)
at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:78)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)
at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)
at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)
at java.lang.Thread.run(Unknown Source)


at org.jboss.threads.JBossThread.run(JBossThread.java:485)

2020-01-29 11:00:28,055 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 78) MSC000001: Failed to start service jboss.deployment.subunit."InterfaceEngine.ear"."InterfaceEngine.war".undertow-deployment: org.jboss.msc.service.StartException in service jboss.deployment.subunit."InterfaceEngine.ear"."InterfaceEngine.war".undertow-deployment: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.NullPointerException

at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:81)

at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)

at java.util.concurrent.FutureTask.run(Unknown Source)

at org.jboss.threads.ContextClassLoaderSavingRunnable.run(ContextClassLoaderSavingRunnable.java:35)

at org.jboss.threads.EnhancedQueueExecutor.safeRun(EnhancedQueueExecutor.java:1982)

at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.doRunTask(EnhancedQueueExecutor.java:1486)

at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1377)

at java.lang.Thread.run(Unknown Source)

at org.jboss.threads.JBossThread.run(JBossThread.java:485)

Caused by: java.lang.RuntimeException: java.lang.RuntimeException: java.lang.NullPointerException

at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:254)

at org.wildfly.extension.undertow.deployment.UndertowDeploymentService.startContext(UndertowDeploymentService.java:96)

at org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:78)

... 8 more

Caused by: java.lang.RuntimeException: java.lang.NullPointerException

at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:283)

at io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:187)

at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:217)

at io.undertow.servlet.core.DeploymentManagerImpl$1.call(DeploymentManagerImpl.java:186)

at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:42)

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:1504)

at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)

at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)

at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)

at org.wildfly.extension.undertow.deployment.UndertowDeploymentInfoService$UndertowThreadSetupAction.lambda$create$0(UndertowDeploymentInfoService.java:1504)

at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:252)

... 10 more

Caused by: java.lang.NullPointerException

at com.sun.faces.application.ApplicationAssociate$PostConstructApplicationListener.processEvent(ApplicationAssociate.java:324)

at javax.faces.event.SystemEvent.processListener(SystemEvent.java:123)

at com.sun.faces.application.applicationimpl.Events.processListeners(Events.java:253)

at com.sun.faces.application.applicationimpl.Events.invokeListenersFor(Events.java:231)

at com.sun.faces.application.applicationimpl.Events.publishEvent(Events.java:112)

at com.sun.faces.application.ApplicationImpl.publishEvent(ApplicationImpl.java:127)

at org.jboss.seam.jsf.SeamApplication.publishEvent(SeamApplication.java:462)

at javax.faces.application.ApplicationWrapper.publishEvent(ApplicationWrapper.java:788)

at com.sun.faces.config.ConfigManager.publishPostConfigEvent(ConfigManager.java:553)

at com.sun.faces.config.ConfigureListener.contextInitialized(ConfigureListener.java:264)

... 22 more