javax.portlet.PortletException: java.lang.NullPointerException

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java.lang.NullPointerException
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java.lang.NullPointerException
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java.lang.NullPointerException
javax.portlet.PortletException: java.lang.NullPointerException
at com.liferay.portlet.InvokerPortletImpl.(InvokerPortletImpl.java:169)
at com.liferay.portlet.InvokerPortletFactoryImpl.create(InvokerPortletFactoryImpl.java:56)
at com.liferay.portlet.PortletInstanceFactoryImpl.init(PortletInstanceFactoryImpl.java:225)
at com.liferay.portlet.PortletInstanceFactoryImpl.create(PortletInstanceFactoryImpl.java:145)
at com.liferay.portlet.PortletInstanceFactoryUtil.create(PortletInstanceFactoryUtil.java:41)
at com.liferay.portlet.PortletBagFactory.create(PortletBagFactory.java:337)
at com.liferay.portal.deploy.hot.PortletHotDeployListener.doInvokeDeploy(PortletHotDeployListener.java:370)
at com.liferay.portal.deploy.hot.PortletHotDeployListener.invokeDeploy(PortletHotDeployListener.java:125)
at com.liferay.portal.deploy.hot.HotDeployImpl.doFireDeployEvent(HotDeployImpl.java:227)
at com.liferay.portal.kernel.deploy.hot.HotDeployUtil.fireDeployEvent(HotDeployUtil.java:28)
at com.liferay.portal.kernel.servlet.PluginContextListener.fireDeployEvent(PluginContextListener.java:164)
at com.liferay.portal.kernel.servlet.PluginContextListener.doPortalInit(PluginContextListener.java:154)
at com.liferay.portal.kernel.util.BasePortalLifecycle.portalInit(BasePortalLifecycle.java:44)
at com.liferay.portal.kernel.util.PortalLifecycleUtil.register(PortalLifecycleUtil.java:74)
at com.liferay.portal.kernel.util.PortalLifecycleUtil.register(PortalLifecycleUtil.java:58)
at com.liferay.portal.kernel.util.BasePortalLifecycle.registerPortalLifecycle(BasePortalLifecycle.java:54)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4939)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5434)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3954)
at org.apache.catalina.startup.HostConfig.checkResources(HostConfig.java:1270)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1439)
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:315)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1374)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1530)
at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1540)
at java.lang.Thread.run(Unknown Source)

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