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java.lang.NullPointerException: 	at org.apache.webbeans.proxy.AbstractProxyFactory.getProxyClassLoader(AbstractProxyFactory.java:81)	at org.apache.webbeans.proxy.NormalScopeProxyFactory.createNormalScopeProxy(NormalScopeProxyFactory.java:122)	at org.apache.webbeans.container.BeanManagerImpl.getReference(BeanManagerImpl.java:732)	at org.apache.webbeans.portable.ProducerMethodProducer.produce(ProducerMethodProducer.java:105)	at org.apache.webbeans.portable.AbstractProducer.produce(AbstractProducer.java:182)	at org.apache.webbeans.component.AbstractOwbBean.create(AbstractOwbBean.java:121)	at org.apache.webbeans.component.ProducerMethodBean.create(ProducerMethodBean.java:117)	at org.apache.webbeans.context.DependentContext.getInstance(DependentContext.java:68)	at org.apache.webbeans.context.AbstractContext.get(AbstractContext.java:125)	at org.apache.webbeans.container.BeanManagerImpl.getReference(BeanManagerImpl.java:754)	at org.apache.webbeans.container.BeanManagerImpl.getInjectableReference(BeanManagerImpl.java:628)	at org.apache.webbeans.inject.AbstractInjectable.inject(AbstractInjectable.java:95)	at org.apache.webbeans.inject.InjectableField.doInjection(InjectableField.java:65)	at org.apache.webbeans.portable.InjectionTargetImpl.injectFields(InjectionTargetImpl.java:208)	at org.apache.webbeans.portable.InjectionTargetImpl.inject(InjectionTargetImpl.java:194)	at org.apache.webbeans.portable.InjectionTargetImpl.inject(InjectionTargetImpl.java:184)	at org.apache.webbeans.component.AbstractOwbBean.create(AbstractOwbBean.java:125)	at org.apache.openejb.core.WebContext.newInstance(WebContext.java:138)	at org.apache.tomee.catalina.JavaeeInstanceManager.newInstance(JavaeeInstanceManager.java:46)	at org.apache.tomee.catalina.JavaeeInstanceManager.newInstance(JavaeeInstanceManager.java:66)	at org.apache.tomee.catalina.JavaeeInstanceManager.newInstance(JavaeeInstanceManager.java:61)	at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1148)	at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:864)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:134)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)	at org.apache.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:44)	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:504)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)	at org.wso2.carbon.statistics.webapp.RequestIntercepterValve.invoke(RequestIntercepterValve.java:47)	at org.wso2.carbon.bam.webapp.stat.publisher.WebAppStatisticPublisherValve.invoke(WebAppStatisticPublisherValve.java:104)	at org.wso2.carbon.tomcat.ext.valves.CompositeValve.continueInvocation(CompositeValve.java:99)	at org.wso2.carbon.tomcat.ext.valves.CarbonTomcatValve$1.invoke(CarbonTomcatValve.java:47)	at org.wso2.carbon.webapp.mgt.TenantLazyLoaderValve.invoke(TenantLazyLoaderValve.java:57)	at org.wso2.carbon.tomcat.ext.valves.TomcatValveContainer.invokeValves(TomcatValveContainer.java:47)	at org.wso2.carbon.tomcat.ext.valves.CompositeValve.invoke(CompositeValve.java:62)	at org.wso2.carbon.tomcat.ext.valves.CarbonStuckThreadDetectionValve.invoke(CarbonStuckThreadDetectionValve.java:159)	at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)	at org.wso2.carbon.tomcat.ext.valves.CarbonContextCreatorValve.invoke(CarbonContextCreatorValve.java:57)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:421)	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1074)	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:611)	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1739)	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1698)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)	at java.lang.Thread.run(Thread.java:745)