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java.lang.NullPointerException: null	at org.apache.maven.index.treeview.DefaultIndexTreeView.listNodes(DefaultIndexTreeView.java:102)	at org.sonatype.nexus.index.DefaultIndexerManager.listNodes(DefaultIndexerManager.java:2314)	at org.sonatype.nexus.rest.indextreeview.AbstractIndexContentPlexusResource.get(AbstractIndexContentPlexusResource.java:131)	at org.sonatype.nexus.rest.repositories.RepositoryIndexContentPlexusResource.get(RepositoryIndexContentPlexusResource.java:77)	at org.sonatype.plexus.rest.resource.RestletResource.represent(RestletResource.java:260)	at org.sonatype.nexus.rest.NexusRestletResource.represent(NexusRestletResource.java:44)	at org.restlet.resource.Resource.getRepresentation(Resource.java:302)	at org.restlet.resource.Resource.handleGet(Resource.java:464)	at org.restlet.Finder.handle(Finder.java:353)	at org.restlet.Filter.doHandle(Filter.java:150)	at org.restlet.Filter.handle(Filter.java:195)	at org.restlet.Router.handle(Router.java:504)	at org.restlet.Filter.doHandle(Filter.java:150)	at org.restlet.Filter.handle(Filter.java:195)	at org.restlet.Router.handle(Router.java:504)	at org.restlet.Filter.doHandle(Filter.java:150)	at org.restlet.Filter.handle(Filter.java:195)	at org.restlet.Filter.doHandle(Filter.java:150)	at org.sonatype.plexus.rest.RetargetableRestlet.doHandle(RetargetableRestlet.java:39)	at org.restlet.Filter.handle(Filter.java:195)	at org.restlet.Filter.doHandle(Filter.java:150)	at org.sonatype.plexus.rest.RetargetableRestlet.doHandle(RetargetableRestlet.java:39)	at org.restlet.Filter.handle(Filter.java:195)	at org.restlet.Filter.doHandle(Filter.java:150)	at org.restlet.Filter.handle(Filter.java:195)	at org.restlet.Filter.doHandle(Filter.java:150)	at org.restlet.Filter.handle(Filter.java:195)	at org.restlet.Filter.doHandle(Filter.java:150)	at com.noelios.restlet.StatusFilter.doHandle(StatusFilter.java:130)	at org.restlet.Filter.handle(Filter.java:195)	at org.restlet.Filter.doHandle(Filter.java:150)	at org.restlet.Filter.handle(Filter.java:195)	at com.noelios.restlet.ChainHelper.handle(ChainHelper.java:124)	at com.noelios.restlet.application.ApplicationHelper.handle(ApplicationHelper.java:112)	at org.restlet.Application.handle(Application.java:341)	at org.restlet.Filter.doHandle(Filter.java:150)	at org.restlet.Filter.handle(Filter.java:195)	at org.restlet.Router.handle(Router.java:504)	at org.restlet.Filter.doHandle(Filter.java:150)	at org.restlet.Filter.handle(Filter.java:195)	at org.restlet.Router.handle(Router.java:504)	at org.restlet.Filter.doHandle(Filter.java:150)	at org.restlet.Filter.handle(Filter.java:195)	at com.noelios.restlet.ChainHelper.handle(ChainHelper.java:124)	at org.restlet.Component.handle(Component.java:673)	at org.restlet.Server.handle(Server.java:331)	at com.noelios.restlet.ServerHelper.handle(ServerHelper.java:68)	at com.noelios.restlet.http.HttpServerHelper.handle(HttpServerHelper.java:147)	at com.noelios.restlet.ext.servlet.ServerServlet.service(ServerServlet.java:881)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:770)	at com.google.inject.servlet.ServletDefinition.doServiceImpl(ServletDefinition.java:278)	at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:268)	at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:180)	at com.google.inject.servlet.ManagedServletPipeline.service(ManagedServletPipeline.java:93)	at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:84)	at com.google.inject.servlet.FilterDefinition.doFilter(FilterDefinition.java:169)	at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:81)	at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)	at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)	at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)	at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)	at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)	at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)	at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)	at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)	at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)	at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)	at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)	at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)	at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)	at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)	at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)	at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)	at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)	at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:380)	at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)	at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)	at com.google.inject.servlet.FilterDefinition.doFilter(FilterDefinition.java:164)	at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:81)	at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:120)	at org.sonatype.nexus.web.NexusGuiceFilter$MultiFilterChain.doFilter(NexusGuiceFilter.java:88)	at org.sonatype.nexus.web.NexusGuiceFilter$MultiFilterPipeline.dispatch(NexusGuiceFilter.java:58)	at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:126)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1338)	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:484)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:524)	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:233)	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1065)	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:413)	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192)	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:999)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)	at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250)	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:111)	at org.eclipse.jetty.server.Server.handle(Server.java:350)	at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:454)	at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:890)	at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:944)	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:630)	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:230)	at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:77)	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:606)	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:46)	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:603)	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:538)	at org.sonatype.sisu.jetty.thread.RunnableWrapper.run(RunnableWrapper.java:26)	at java.lang.Thread.run(Thread.java:722)