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java.lang.IllegalStateException: Class invariant violation	at org.apache.log4j.LogManager.getLoggerRepository(LogManager.java:199)	at org.apache.log4j.LogManager.getLogger(LogManager.java:228)	at org.apache.log4j.Logger.getLogger(Logger.java:104)	at org.apache.commons.logging.impl.Log4JLogger.getLogger(Log4JLogger.java:289)	at org.apache.commons.logging.impl.Log4JLogger.(Log4JLogger.java:109)	at sun.reflect.GeneratedConstructorAccessor97.newInstance(Unknown Source)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)	at java.lang.reflect.Constructor.newInstance(Constructor.java:525)	at org.apache.commons.logging.impl.LogFactoryImpl.newInstance(LogFactoryImpl.java:608)	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.myfaces.shared_tomahawk.renderkit.html.HtmlResponseWriterImpl.(HtmlResponseWriterImpl.java:44)	at sun.misc.Unsafe.ensureClassInitialized(Native Method)	at sun.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(UnsafeFieldAccessorFactory.java:43)	at sun.reflect.ReflectionFactory.newFieldAccessor(ReflectionFactory.java:140)	at java.lang.reflect.Field.acquireFieldAccessor(Field.java:949)	at java.lang.reflect.Field.getFieldAccessor(Field.java:930)	at java.lang.reflect.Field.get(Field.java:372)	at org.glassfish.web.loader.WebappClassLoader.clearReferences(WebappClassLoader.java:1836)	at org.glassfish.web.loader.WebappClassLoader.stop(WebappClassLoader.java:1665)	at org.glassfish.web.loader.WebappClassLoader.preDestroy(WebappClassLoader.java:1634)	at org.glassfish.deployment.common.DeploymentContextImpl.preDestroy(DeploymentContextImpl.java:150)	at com.sun.enterprise.v3.server.ApplicationLifecycle$1.actOn(ApplicationLifecycle.java:281)	at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:466)	at com.sun.enterprise.v3.server.ApplicationLifecycle.deploy(ApplicationLifecycle.java:240)	at org.glassfish.deployment.admin.DeployCommand.execute(DeployCommand.java:382)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$1.execute(CommandRunnerImpl.java:355)	at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:370)	at com.sun.enterprise.v3.admin.CommandRunnerImpl.doCommand(CommandRunnerImpl.java:1064)	at com.sun.enterprise.v3.admin.CommandRunnerImpl.access$1200(CommandRunnerImpl.java:96)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1244)	at com.sun.enterprise.v3.admin.CommandRunnerImpl$ExecutionContext.execute(CommandRunnerImpl.java:1232)	at com.sun.enterprise.v3.admin.AdminAdapter.doCommand(AdminAdapter.java:459)	at com.sun.enterprise.v3.admin.AdminAdapter.service(AdminAdapter.java:209)	at com.sun.grizzly.tcp.http11.GrizzlyAdapter.service(GrizzlyAdapter.java:168)	at com.sun.enterprise.v3.server.HK2Dispatcher.dispath(HK2Dispatcher.java:117)	at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:238)	at com.sun.grizzly.http.ProcessorTask.invokeAdapter(ProcessorTask.java:828)	at com.sun.grizzly.http.ProcessorTask.doProcess(ProcessorTask.java:725)	at com.sun.grizzly.http.ProcessorTask.process(ProcessorTask.java:1019)	at com.sun.grizzly.http.DefaultProtocolFilter.execute(DefaultProtocolFilter.java:225)	at com.sun.grizzly.DefaultProtocolChain.executeProtocolFilter(DefaultProtocolChain.java:137)	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:104)	at com.sun.grizzly.DefaultProtocolChain.execute(DefaultProtocolChain.java:90)	at com.sun.grizzly.http.HttpProtocolChain.execute(HttpProtocolChain.java:79)	at com.sun.grizzly.ProtocolChainContextTask.doCall(ProtocolChainContextTask.java:54)	at com.sun.grizzly.SelectionKeyContextTask.call(SelectionKeyContextTask.java:59)	at com.sun.grizzly.ContextTask.run(ContextTask.java:71)	at com.sun.grizzly.util.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:532)	at com.sun.grizzly.util.AbstractThreadPool$Worker.run(AbstractThreadPool.java:513)	at java.lang.Thread.run(Thread.java:722)