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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:874)	at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:604)	at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:336)	at org.apache.commons.logging.impl.LogFactoryImpl.getInstance(LogFactoryImpl.java:310)	at org.apache.commons.logging.LogFactory.getLog(LogFactory.java:685)	at org.apache.axis2.transport.http.AxisServlet.(AxisServlet.java:79)	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:494)	at java.lang.Class.newInstance0(Class.java:354)	at java.lang.Class.newInstance(Class.java:307)	at weblogic.servlet.internal.WebComponentContributor.getNewInstance(WebComponentContributor.java:187)	at weblogic.servlet.internal.WebComponentContributor.createServletInstance(WebComponentContributor.java:203)	at weblogic.servlet.internal.StubSecurityHelper$ServletInitAction.run(StubSecurityHelper.java:254)	at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)	at weblogic.security.service.SecurityManager.runAs(Unknown Source)	at weblogic.servlet.internal.StubSecurityHelper.createServlet(StubSecurityHelper.java:63)	at weblogic.servlet.internal.StubLifecycleHelper.createOneInstance(StubLifecycleHelper.java:58)	at weblogic.servlet.internal.StubLifecycleHelper.(StubLifecycleHelper.java:48)	at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.java:507)	at weblogic.servlet.internal.WebAppServletContext.preloadServlet(WebAppServletContext.java:1853)	at weblogic.servlet.internal.WebAppServletContext.loadServletsOnStartup(WebAppServletContext.java:1830)	at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:1750)	at weblogic.servlet.internal.WebAppServletContext.start(WebAppServletContext.java:2909)	at weblogic.servlet.internal.WebAppModule.startContexts(WebAppModule.java:973)	at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:361)	at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:204)	at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)	at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:60)	at weblogic.application.internal.flow.ScopedModuleDriver.start(ScopedModuleDriver.java:200)	at weblogic.application.internal.flow.ModuleListenerInvoker.start(ModuleListenerInvoker.java:117)	at weblogic.application.internal.flow.ModuleStateDriver$3.next(ModuleStateDriver.java:204)	at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)	at weblogic.application.internal.flow.ModuleStateDriver.start(ModuleStateDriver.java:60)	at weblogic.application.internal.flow.StartModulesFlow.activate(StartModulesFlow.java:26)	at weblogic.application.internal.BaseDeployment$2.next(BaseDeployment.java:635)	at weblogic.application.utils.StateMachineDriver.nextState(StateMachineDriver.java:26)	at weblogic.application.internal.BaseDeployment.activate(BaseDeployment.java:212)	at weblogic.application.internal.DeploymentStateChecker.activate(DeploymentStateChecker.java:154)	at weblogic.deploy.internal.targetserver.AppContainerInvoker.activate(AppContainerInvoker.java:80)	at weblogic.deploy.internal.targetserver.operations.AbstractOperation.activate(AbstractOperation.java:566)	at weblogic.deploy.internal.targetserver.operations.ActivateOperation.activateDeployment(ActivateOperation.java:136)	at weblogic.deploy.internal.targetserver.operations.ActivateOperation.doCommit(ActivateOperation.java:104)	at weblogic.deploy.internal.targetserver.operations.AbstractOperation.commit(AbstractOperation.java:320)	at weblogic.deploy.internal.targetserver.DeploymentManager.handleDeploymentCommit(DeploymentManager.java:816)	at weblogic.deploy.internal.targetserver.DeploymentManager.activateDeploymentList(DeploymentManager.java:1223)	at weblogic.deploy.internal.targetserver.DeploymentManager.handleCommit(DeploymentManager.java:434)	at weblogic.deploy.internal.targetserver.DeploymentServiceDispatcher.commit(DeploymentServiceDispatcher.java:161)	at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.doCommitCallback(DeploymentReceiverCallbackDeliverer.java:181)	at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer.access$100(DeploymentReceiverCallbackDeliverer.java:12)	at weblogic.deploy.service.internal.targetserver.DeploymentReceiverCallbackDeliverer$2.run(DeploymentReceiverCallbackDeliverer.java:67)	at weblogic.work.SelfTuningWorkManagerImpl$WorkAdapterImpl.run(SelfTuningWorkManagerImpl.java:464)	at weblogic.work.ExecuteThread.execute(ExecuteThread.java:200)	at weblogic.work.ExecuteThread.run(ExecuteThread.java:172)