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java.lang.NullPointerException at org.apache.struts.action.ActionServlet.parseModuleConfigFile( at org.apache.struts.action.ActionServlet.initModuleConfig( at org.apache.struts.action.ActionServlet.init( at javax.servlet.GenericServlet.init( at servletunit.struts.CactusStrutsTestCase.getActionServlet( at servletunit.struts.CactusStrutsTestCase.actionPerform( at examples.cactus.TestCactusLoginAction.testSuccessfulLogin( at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke( at sun.reflect.DelegatingMethodAccessorImpl.invoke( at java.lang.reflect.Method.invoke( at junit.framework.TestCase.runTest( at junit.framework.TestCase.runBare( at org.apache.cactus.internal.AbstractCactusTestCase.runBareServer( at org.apache.cactus.internal.server.AbstractWebTestCaller.doTest(