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java.lang.NullPointerException: 	at java.io.File.(File.java:222)	at org.sonatype.nexus.log.Log4jLogConfigurationSource.getSource(Log4jLogConfigurationSource.java:31)	at org.sonatype.nexus.log.Log4jLogConfigurationSource.getSource(Log4jLogConfigurationSource.java:23)	at org.sonatype.nexus.log.Log4jLogConfiguration.load(Log4jLogConfiguration.java:82)	at org.sonatype.nexus.log.Log4jLogManager.getLogConfig(Log4jLogManager.java:160)	at org.sonatype.nexus.events.NexusStartedEventInspector.ensureErrorWarningAppender(NexusStartedEventInspector.java:78)	at org.sonatype.nexus.events.NexusStartedEventInspector.inspect(NexusStartedEventInspector.java:51)	at org.sonatype.nexus.events.DefaultEventInspectorHost.processEvent(DefaultEventInspectorHost.java:48)	at org.sonatype.nexus.events.DefaultEventInspectorHost.onEvent(DefaultEventInspectorHost.java:62)	at org.sonatype.plexus.appevents.AbstractSimpleEventMulticaster.notifyEventListeners(AbstractSimpleEventMulticaster.java:55)	at org.sonatype.nexus.DefaultNexus.startService(DefaultNexus.java:733)	at org.sonatype.nexus.DefaultNexus.start(DefaultNexus.java:647)	at org.codehaus.plexus.personality.plexus.lifecycle.phase.StartPhase.execute(StartPhase.java:33)	at org.codehaus.plexus.lifecycle.AbstractLifecycleHandler.start(AbstractLifecycleHandler.java:97)	at org.codehaus.plexus.component.manager.AbstractComponentManager.start(AbstractComponentManager.java:167)	at org.codehaus.plexus.component.builder.XBeanComponentBuilder.startComponentLifecycle(XBeanComponentBuilder.java:280)	at org.codehaus.plexus.component.builder.XBeanComponentBuilder.build(XBeanComponentBuilder.java:129)	at org.codehaus.plexus.component.manager.AbstractComponentManager.createComponentInstance(AbstractComponentManager.java:181)	at org.codehaus.plexus.component.manager.SingletonComponentManager.getComponent(SingletonComponentManager.java:67)	at org.codehaus.plexus.DefaultComponentRegistry.getComponent(DefaultComponentRegistry.java:351)	at org.codehaus.plexus.DefaultComponentRegistry.lookup(DefaultComponentRegistry.java:178)	at org.codehaus.plexus.DefaultPlexusContainer.lookup(DefaultPlexusContainer.java:383)	at org.codehaus.plexus.PlexusTestCase.lookup(PlexusTestCase.java:208)	at org.sonatype.nexus.rest.repositories.RepositoryCreateUpdateTest.setUp(RepositoryCreateUpdateTest.java:40)	at junit.framework.TestCase.runBare(TestCase.java:128)	at junit.framework.TestResult$1.protect(TestResult.java:106)	at junit.framework.TestResult.runProtected(TestResult.java:124)	at junit.framework.TestResult.run(TestResult.java:109)	at junit.framework.TestCase.run(TestCase.java:120)	at junit.framework.TestSuite.runTest(TestSuite.java:230)	at junit.framework.TestSuite.run(TestSuite.java:225)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.apache.maven.surefire.junit.JUnitTestSet.execute(JUnitTestSet.java:213)	at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.executeTestSet(AbstractDirectoryTestSuite.java:140)	at org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.execute(AbstractDirectoryTestSuite.java:127)	at org.apache.maven.surefire.Surefire.run(Surefire.java:177)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:345)	at org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1009)