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

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java.lang.NullPointerException:
at weblogic.management.mbeans.custom.Application.jarDirectory(Application.java:1394)
at weblogic.management.mbeans.custom.Application.jarDirectory(Application.java:1414)
at weblogic.management.mbeans.custom.Application.jarDirectory(Application.java:1414)
at weblogic.management.mbeans.custom.Application.jarDirectory(Application.java:1379)
at weblogic.management.mbeans.custom.Application.getDirectoryArchive(Application.java:1349)
at weblogic.management.mbeans.custom.Application.getInputStream(Application.java:1207)
at weblogic.management.internal.DynamicMBeanImpl.invokeLocally(DynamicMBeanImpl.java:636)
at weblogic.management.internal.DynamicMBeanImpl.invoke(DynamicMBeanImpl.java:621)
at weblogic.management.internal.ConfigurationMBeanImpl.invoke(ConfigurationMBeanImpl.java:359)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1555)
at com.sun.management.jmx.MBeanServerImpl.invoke(MBeanServerImpl.java:1523)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:468)
at weblogic.management.internal.MBeanProxy.invoke(MBeanProxy.java:209)
at weblogic.management.servlet.FileDistributionServlet.doGetComponentRequest(FileDistributionServlet.java:387)
at weblogic.management.servlet.FileDistributionServlet.doGet(FileDistributionServlet.java:239)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:265)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:200)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:2495)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)

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