See an WARN message when JBoss startup

Issue

We see an warn message whenever JBoss starting up. We're not sure if it impacts deployed application.

2013-07-11 14:38:00,468 INFO  [org.jboss.bootstrap.microcontainer.ServerImpl] (JBoss Shutdown Hook) Shutdown complete
2013-07-11 14:38:42,888 INFO  [org.jboss.web.WebService] (main) Using RMI server codebase: http://beul0012:8083/
2013-07-11 14:38:46,701 INFO  [org.jboss.wsf.stack.jbws.NativeServerConfig] (main) JBoss Web Services - Stack Native Core
2013-07-11 14:38:46,701 INFO  [org.jboss.wsf.stack.jbws.NativeServerConfig] (main) 3.1.2.SP11
2013-07-11 14:38:47,554 INFO  [org.jboss.logbridge.LogNotificationListener] (main) Adding notification listener for logging mbean "jboss.system:service=Logging,type=Log4jService" to server org.jboss.mx.server.MBeanServerImpl@2b8ca663[ defaultDomain='jboss' ]
2013-07-11 14:38:49,388 WARN  [org.jboss.deployers.vfs.plugins.structure.VFSStructureBuilder] (main) Error populating deployment vfsfile:/p_jboss/jboss-as/server/production/deploy/xnio-provider.jar/
org.jboss.deployers.spi.DeploymentException: Unable to find class path entry ClassPathEntryImpl{path=WEB-INF/classes} from xnio-provider.jar
    at org.jboss.deployers.spi.DeploymentException.rethrowAsDeploymentException(DeploymentException.java:49)
    at org.jboss.deployers.vfs.plugins.structure.VFSStructureBuilder.applyContextInfo(VFSStructureBuilder.java:188)
    at org.jboss.deployers.structure.spi.helpers.AbstractStructureBuilder.populateContext(AbstractStructureBuilder.java:139)
    at org.jboss.deployers.structure.spi.helpers.AbstractStructureBuilder.populateContext(AbstractStructureBuilder.java:92)
    at org.jboss.deployers.structure.spi.helpers.AbstractStructuralDeployers.determineStructure(AbstractStructuralDeployers.java:89)
    at org.jboss.deployers.plugins.main.MainDeployerImpl.determineStructure(MainDeployerImpl.java:1001)
    at org.jboss.deployers.plugins.main.MainDeployerImpl.determineDeploymentContext(MainDeployerImpl.java:437)
    at org.jboss.deployers.plugins.main.MainDeployerImpl.addDeployment(MainDeployerImpl.java:387)
    at org.jboss.deployers.plugins.main.MainDeployerImpl.addDeployment(MainDeployerImpl.java:297)
    at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.addDeployment(MainDeployerAdapter.java:86)
    at org.jboss.system.server.profileservice.repository.ProfileDeployAction.install(ProfileDeployAction.java:61)
    at org.jboss.system.server.profileservice.repository.AbstractProfileAction.install(AbstractProfileAction.java:53)
    at org.jboss.system.server.profileservice.repository.AbstractProfileService.install(AbstractProfileService.java:403)
    at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
    at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1652)
    at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:938)
    at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
    at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:988)
    at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:778)
    at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:543)
    at org.jboss.system.server.profileservice.repository.AbstractProfileService.registerProfile(AbstractProfileService.java:308)
    at org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:256)
    at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:461)
    at org.jboss.Main.boot(Main.java:221)
    at org.jboss.Main$1.run(Main.java:556)
    at java.lang.Thread.run(Thread.java:662)
Caused by: java.io.IOException: Child not found WEB-INF/classes for FileHandler@1198589960[path=xnio-provider.jar context=file:/p_jboss/jboss-as/server/production/deploy/ real=file:/p_jboss/jboss-as/server/production/deploy/xnio-provider.jar/], 
...
, FileHandler@333902324[path=xnio-provider.jar/VwCN.war context=file:/p_jboss/jboss-as/server/production/deploy/ real=file:/p_jboss/jboss-as/server/production/deploy/xnio-provider.jar/VwCN.war/]]
    at org.jboss.virtual.VirtualFile.findChild(VirtualFile.java:472)
    at org.jboss.deployers.vfs.plugins.structure.VFSStructureBuilder.applyContextInfo(VFSStructureBuilder.java:184)
    ... 24 more