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org.apache.commons.logging.LogConfigurationException: User-specified log class 'org.apache.commons.logging.impl.Log4JLogger' cannot be found or is not useable.	at org.apache.commons.logging.impl.LogFactoryImpl.discoverLogImplementation(LogFactoryImpl.java:798)	at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:601)	at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:333)	at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:307)	at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:645)	at org.apache.myfaces.webapp.StartupServletContextListener.clinit(StartupServletContextListener.java:45)	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)	at java.lang.reflect.Constructor.newInstance(Constructor.java:513)	at java.lang.Class.newInstance0(Class.java:355)	at java.lang.Class.newInstance(Class.java:308)	at org.jboss.web.tomcat.service.TomcatInjectionContainer.newInstance(TomcatInjectionContainer.java:242)	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3859)	at org.apache.catalina.core.StandardContext.start(StandardContext.java:4393)	at org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeployInternal(TomcatDeployment.java:367)	at org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeploy(TomcatDeployment.java:146)	at org.jboss.web.deployers.AbstractWarDeployment.start(AbstractWarDeployment.java:460)	at org.jboss.web.deployers.WebModule.startModule(WebModule.java:118)	at org.jboss.web.deployers.WebModule.start(WebModule.java:96)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)	at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)	at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)	at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)	at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)	at org.jboss.system.microcontainer.ServiceProxy.invoke(ServiceProxy.java:206)	at $Proxy36.start(Unknown Source)	at org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:42)	at org.jboss.system.microcontainer.StartStopLifecycleAction.installAction(StartStopLifecycleAction.java:37)	at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62)	at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71)	at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)	at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)	at org.jboss.system.microcontainer.ServiceControllerContext.install(ServiceControllerContext.java:286)	at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1598)	at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)	at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1062)	at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)	at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)	at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)	at org.jboss.system.ServiceController.doChange(ServiceController.java:688)	at org.jboss.system.ServiceController.start(ServiceController.java:460)	at org.jboss.system.deployers.ServiceDeployer.start(ServiceDeployer.java:146)	at org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:104)	at org.jboss.system.deployers.ServiceDeployer.deploy(ServiceDeployer.java:45)	at org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalDeploy(AbstractSimpleRealDeployer.java:62)	at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:50)	at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:171)	at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1439)	at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1157)	at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1178)	at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1098)	at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)	at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1598)	at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)	at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1062)	at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)	at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)	at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)	at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:781)	at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:545)	at org.jboss.system.server.profileservice.ProfileServiceBootstrap.loadProfile(ProfileServiceBootstrap.java:304)	at org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:205)	at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:405)	at org.jboss.Main.boot(Main.java:209)	at org.jboss.Main$1.run(Main.java:547)	at java.lang.Thread.run(Thread.java:619)