Can't start Application on Websphere 9

Hello,

yesterday I deployed a build the vaadin flow starter project (without swing) to my Websphere 9 and got the following error:

[10.07.18 17:03:42:084 MESZ]
 000000c5 WASSessionCor I SessionContextRegistry getSessionContext SESN0176I: Für den Anwendungsschlüssel default_host/application wird ein neuer Sitzungskontext erstellt.
[10.07.18 17:03:45:058 MESZ]
 000000c5 webapp        I com.ibm.ws.webcontainer.webapp.WebApp log SRVE0292I: Servletnachricht - [TestApplication_war#TestApplication.war]
:.Initializing AtmosphereFramework
[10.07.18 17:03:45:064 MESZ]
 000000c5 webapp        E com.ibm.ws.webcontainer.webapp.WebApp notifyServletContextDestroyed SRVE0285E: Es wurde eine Ausnahme beim Löschen des Kontextes abgefangen: {0}
                                 java.lang.NullPointerException
	at org.jboss.weld.servlet.WeldInitialListener.contextDestroyed(WeldInitialListener.java:119)
	at com.ibm.ws.webcontainer.managedobject.ManagedObjectListenerWrapper.contextDestroyed(ManagedObjectListenerWrapper.java:138)
	at com.ibm.ws.webcontainer.webapp.WebApp.notifyServletContextDestroyed(WebApp.java:1905)
	at com.ibm.ws.webcontainer.webapp.WebApp.destroy(WebApp.java:3326)
	at com.ibm.ws.webcontainer.webapp.WebAppImpl.destroy(WebAppImpl.java:1574)
	at com.ibm.ws.webcontainer.webapp.WebGroupImpl.addWebApplication(WebGroupImpl.java:97)
	at com.ibm.ws.webcontainer.VirtualHostImpl.addWebApplication(VirtualHostImpl.java:171)
	at com.ibm.ws.webcontainer.WSWebContainer.addWebApp(WSWebContainer.java:904)
	at com.ibm.ws.webcontainer.WSWebContainer.addWebApplication(WSWebContainer.java:789)
	at com.ibm.ws.webcontainer.component.WebContainerImpl.install(WebContainerImpl.java:427)
	at com.ibm.ws.webcontainer.component.WebContainerImpl.start(WebContainerImpl.java:719)
	at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:1247)
	at com.ibm.ws.runtime.component.DeployedApplicationImpl.fireDeployedObjectStart(DeployedApplicationImpl.java:1514)
	at com.ibm.ws.runtime.component.DeployedModuleImpl.start(DeployedModuleImpl.java:704)
	at com.ibm.ws.runtime.component.DeployedApplicationImpl.start(DeployedApplicationImpl.java:1096)
	at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:799)
	at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplicationDynamically(ApplicationMgrImpl.java:1449)
	at com.ibm.ws.runtime.component.ApplicationMgrImpl.start(ApplicationMgrImpl.java:2309)
	at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.start(CompositionUnitMgrImpl.java:436)
	at com.ibm.ws.runtime.component.CompositionUnitImpl.start(CompositionUnitImpl.java:123)
	at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.start(CompositionUnitMgrImpl.java:379)
	at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.access$500(CompositionUnitMgrImpl.java:127)
	at com.ibm.ws.runtime.component.CompositionUnitMgrImpl$1.run(CompositionUnitMgrImpl.java:654)
	at com.ibm.ws.security.auth.ContextManagerImpl.runAs(ContextManagerImpl.java:5556)
	at com.ibm.ws.security.auth.ContextManagerImpl.runAsSystem(ContextManagerImpl.java:5682)
	at com.ibm.ws.security.core.SecurityContext.runAsSystem(SecurityContext.java:255)
	at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.startCompositionUnit(CompositionUnitMgrImpl.java:668)
	at com.ibm.ws.runtime.component.CompositionUnitMgrImpl.startCompositionUnit(CompositionUnitMgrImpl.java:612)
	at com.ibm.ws.runtime.component.ApplicationMgrImpl.startApplication(ApplicationMgrImpl.java:1339)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:90)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
	at java.lang.reflect.Method.invoke(Method.java:508)
	at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:83)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:90)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
	at java.lang.reflect.Method.invoke(Method.java:508)
	at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:287)
	at javax.management.modelmbean.RequiredModelMBean$4.run(RequiredModelMBean.java:1263)
	at java.security.AccessController.doPrivileged(AccessController.java:647)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:91)
	at javax.management.modelmbean.RequiredModelMBean.invokeMethod(RequiredModelMBean.java:1257)
	at javax.management.modelmbean.RequiredModelMBean.invoke(RequiredModelMBean.java:1096)
	at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:831)
	at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:813)
	at com.ibm.ws.management.AdminServiceImpl$1.run(AdminServiceImpl.java:1350)
	at com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java:118)
	at com.ibm.ws.management.AdminServiceImpl.invoke(AdminServiceImpl.java:1243)
	at com.ibm.ws.management.commands.AdminServiceCommands$InvokeCmd.execute(AdminServiceCommands.java:251)
	at com.ibm.ws.console.core.mbean.MBeanHelper.invoke(MBeanHelper.java:246)
	at com.ibm.ws.console.appdeployment.ApplicationDeploymentCollectionAction.execute(ApplicationDeploymentCollectionAction.java:608)
	at org.apache.struts.action.RequestProcessor.processActionPerform(Unknown Source)
	at org.apache.struts.action.RequestProcessor.process(Unknown Source)
	at org.apache.struts.action.ActionServlet.process(Unknown Source)
	at org.apache.struts.action.ActionServlet.doPost(Unknown Source)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1235)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:779)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:478)
	at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.invokeTarget(WebAppFilterChain.java:143)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:78)
	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:969)
	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1109)
	at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.dispatch(WebAppRequestDispatcher.java:1408)
	at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:198)
	at org.apache.struts.action.RequestProcessor.doForward(Unknown Source)
	at org.apache.struts.tiles.TilesRequestProcessor.doForward(Unknown Source)
	at org.apache.struts.action.RequestProcessor.processForwardConfig(Unknown Source)
	at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(Unknown Source)
	at org.apache.struts.action.RequestProcessor.process(Unknown Source)
	at org.apache.struts.action.ActionServlet.process(Unknown Source)
	at org.apache.struts.action.ActionServlet.doPost(Unknown Source)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1235)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:779)
	at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:478)
	at com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.invokeTarget(WebAppFilterChain.java:143)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:96)
	at com.ibm.ws.console.core.servlet.WSCUrlFilter.setUpCommandAssistance(WSCUrlFilter.java:970)
	at com.ibm.ws.console.core.servlet.WSCUrlFilter.continueStoringTaskState(WSCUrlFilter.java:517)
	at com.ibm.ws.console.core.servlet.WSCUrlFilter.doFilter(WSCUrlFilter.java:338)
	at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:197)
	at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:90)
	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:969)
	at com.ibm.ws.webcontainer.filter.WebAppFilterManager.invokeFilters(WebAppFilterManager.java:1109)
	at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:4150)
	at com.ibm.ws.webcontainer.webapp.WebAppImpl.handleRequest(WebAppImpl.java:2208)
	at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:304)
	at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:1030)
	at com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1817)
	at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:382)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:465)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewRequest(HttpInboundLink.java:532)
	at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.processRequest(HttpInboundLink.java:318)
	at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:88)
	at com.ibm.ws.ssl.channel.impl.SSLReadServiceContext$SSLReadCompletedCallback.complete(SSLReadServiceContext.java:1820)
	at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:175)
	at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
	at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
	at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
	at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
	at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
	at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
	at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1909)

[10.07.18 17:03:45:070 MESZ]
 000000c5 webapp        E com.ibm.ws.webcontainer.webapp.WebGroupImpl WebGroup SRVE0015E: Die Webanwendung TestApplication.war konnte nicht initialisiert werden.
[10.07.18 17:03:45:073 MESZ]
 000000c5 DeployedAppli W   WSVR0206E: Das Modul TestApplication.war der Anwendung TestApplication_war.ear/deployments/TestApplication_war konnte nicht gestartet werden.
[10.07.18 17:03:45:075 MESZ]
 000000c5 ApplicationMg W   WSVR0101W: Beim Starten von TestApplication_war ist ein Fehler aufgetreten.
[10.07.18 17:03:45:076 MESZ]
 000000c5 ApplicationMg A   WSVR0217I: Die Anwendung wird gestoppt: TestApplication_war
[10.07.18 17:03:45:096 MESZ]
 000000c5 ApplicationMg A   WSVR0220I: Die Anwendung wurde gestoppt: TestApplication_war
[10.07.18 17:03:45:099 MESZ]
 000000c5 CompositionUn E   WSVR0194E: Die Kompositionseinheit WebSphere:cuname=TestApplication_war in der Geschäftsanwendung WebSphere:blaname=TestApplication_war konnte nicht gestartet werden.

I build the war once with and once without production-mode but got the same error in both cases.

Does anybody knows what I did wrong, or is it not possible at the moment to deploy Vaadin Flow to Websphere 9 ?

I tested Flow against IBM WebSphere Application Server 18.0 Liberty, and ran into problems when deploying the app. I filed a bug report to Flow, found here: https://github.com/vaadin/flow/issues/3960

Does it sound familiar to you? Can you add some details to the ticket if you have anything more info on the matter?