java.lang.NullPointerException: This exception has no message.

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java.lang.NullPointerException:
at javax.servlet.GenericServlet.getServletContext(GenericServlet.java:205)
at javax.servlet.GenericServlet.log(GenericServlet.java:300)
at javax.servlet.GenericServlet.destroy(GenericServlet.java:122)
at weblogic.servlet.internal.ServletStubImpl.destroyServlet(ServletStubImpl.java:451)
at weblogic.servlet.internal.ServletStubImpl.destroyServlet(ServletStubImpl.java:434)
at weblogic.servlet.internal.WebAppServletContext.destroyServlets(WebAppServletContext.java:3805)
at weblogic.servlet.internal.WebAppServletContext.shutdown(WebAppServletContext.java:3764)
at weblogic.servlet.internal.ServletContextManager.removeContext(ServletContextManager.java:153)
at weblogic.j2ee.WebAppComponent.undeploy(WebAppComponent.java:90)
at weblogic.j2ee.Application.undeploy(Application.java:285)
at weblogic.j2ee.J2EEService.undeployApplication(J2EEService.java:232)
at weblogic.management.mbeans.custom.Application.setLocalDeployed(Application.java:370)
at weblogic.management.mbeans.custom.Application.setDeployed(Application.java:300)
at weblogic.management.internal.DynamicMBeanImpl.invokeSetter(DynamicMBeanImpl.java:1401)
at weblogic.management.internal.DynamicMBeanImpl.setAttribute(DynamicMBeanImpl.java:894)
at weblogic.management.internal.DynamicMBeanImpl.setAttribute(DynamicMBeanImpl.java:847)
at weblogic.management.internal.ConfigurationMBeanImpl.setAttribute(ConfigurationMBeanImpl.java:296)
at com.sun.management.jmx.MBeanServerImpl.setAttribute(MBeanServerImpl.java:1358)
at weblogic.management.internal.ConfigurationMBeanImpl.updateConfigMBeans(ConfigurationMBeanImpl.java:393)
at weblogic.management.internal.ConfigurationMBeanImpl.setAttribute(ConfigurationMBeanImpl.java:299)
at com.sun.management.jmx.MBeanServerImpl.setAttribute(MBeanServerImpl.java:1358)
at weblogic.management.internal.MBeanProxy.setAttribute(MBeanProxy.java:322)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:204)
at weblogic.management.mbeans.custom.ApplicationManager.poll(ApplicationManager.java:846)
at weblogic.management.mbeans.custom.ApplicationManager.poll(ApplicationManager.java:748)
at weblogic.management.mbeans.custom.ApplicationManager.update(ApplicationManager.java:206)
at weblogic.management.mbeans.custom.ApplicationManager$ApplicationPoller.run(ApplicationManager.java:1098)

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