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java.lang.NullPointerException: null	at com.bolyuba.nexus.plugin.npm.service.internal.MetadataParser.parsePackageAttachment(MetadataParser.java:241)	at com.bolyuba.nexus.plugin.npm.service.internal.MetadataParser.parsePackageAttachments(MetadataParser.java:211)	at com.bolyuba.nexus.plugin.npm.service.internal.MetadataParser.parsePackageRoot(MetadataParser.java:155)	at com.bolyuba.nexus.plugin.npm.service.internal.MetadataParser.parsePackageRoot(MetadataParser.java:100)	at com.bolyuba.nexus.plugin.npm.service.internal.proxy.HttpProxyMetadataTransport.fetchPackageRoot(HttpProxyMetadataTransport.java:147)	at com.bolyuba.nexus.plugin.npm.service.internal.ProxyMetadataServiceImpl.mayUpdatePackageRoot(ProxyMetadataServiceImpl.java:203)	at com.bolyuba.nexus.plugin.npm.service.internal.ProxyMetadataServiceImpl.doGeneratePackageRoot(ProxyMetadataServiceImpl.java:189)	at com.bolyuba.nexus.plugin.npm.service.internal.GeneratorSupport.generatePackageRoot(GeneratorSupport.java:108)	at com.bolyuba.nexus.plugin.npm.service.internal.GroupMetadataServiceImpl.doGeneratePackageRoot(GroupMetadataServiceImpl.java:68)	at com.bolyuba.nexus.plugin.npm.service.internal.GeneratorSupport.generatePackageRoot(GeneratorSupport.java:108)	at com.bolyuba.nexus.plugin.npm.service.internal.GeneratorSupport.producePackageRoot(GeneratorSupport.java:77)	at com.bolyuba.nexus.plugin.npm.group.DefaultNpmGroupRepository.doRetrieveLocalItem(DefaultNpmGroupRepository.java:136)	at org.sonatype.nexus.proxy.repository.AbstractRepository.doRetrieveItem(AbstractRepository.java:1230)	at org.sonatype.nexus.proxy.repository.AbstractGroupRepository.doRetrieveItem(AbstractGroupRepository.java:237)	at org.sonatype.nexus.proxy.repository.AbstractRepository.retrieveItem(AbstractRepository.java:758)	at org.sonatype.nexus.proxy.repository.AbstractRepository.retrieveItem(AbstractRepository.java:590)	at org.sonatype.nexus.proxy.router.DefaultRepositoryRouter.retrieveItem(DefaultRepositoryRouter.java:155)	at org.sonatype.nexus.content.internal.ContentServlet.doGet(ContentServlet.java:387)	at org.sonatype.nexus.content.internal.ContentServlet.service(ContentServlet.java:353)	at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)	at com.google.inject.servlet.ServletDefinition.doServiceImpl(ServletDefinition.java:288)	at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:278)	at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:182)	at com.google.inject.servlet.ManagedServletPipeline.service(ManagedServletPipeline.java:93)	at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:85)	at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:112)	at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)	at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:120)	at org.sonatype.nexus.web.internal.NexusGuiceFilter$MultiFilterChain.doFilter(NexusGuiceFilter.java:82)	at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:89)	at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:120)	at org.sonatype.nexus.web.internal.NexusGuiceFilter$MultiFilterChain.doFilter(NexusGuiceFilter.java:82)	at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:89)	at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:120)	at org.sonatype.nexus.web.internal.NexusGuiceFilter$MultiFilterChain.doFilter(NexusGuiceFilter.java:82)	at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:89)	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.sonatype.nexus.web.internal.SecurityFilter.executeChain(SecurityFilter.java:73)	at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)	at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)	at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)	at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)	at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)	at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)	at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)	at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:120)	at org.sonatype.nexus.web.internal.NexusGuiceFilter$MultiFilterChain.doFilter(NexusGuiceFilter.java:82)	at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:89)	at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:120)	at org.sonatype.nexus.web.internal.NexusGuiceFilter$MultiFilterChain.doFilter(NexusGuiceFilter.java:82)	at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:89)	at com.sonatype.nexus.licensing.internal.LicensingRedirectFilter.doFilter(LicensingRedirectFilter.java:135)	at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)	at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:120)	at org.sonatype.nexus.web.internal.NexusGuiceFilter$MultiFilterChain.doFilter(NexusGuiceFilter.java:82)	at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:89)	at com.yammer.metrics.web.WebappMetricsFilter.doFilter(WebappMetricsFilter.java:76)	at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)	at org.sonatype.nexus.web.internal.CommonHeadersFilter.doFilter(CommonHeadersFilter.java:69)	at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)	at org.sonatype.nexus.web.internal.ErrorPageFilter.doFilter(ErrorPageFilter.java:71)	at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)	at org.sonatype.nexus.web.internal.BaseUrlHolderFilter.doFilter(BaseUrlHolderFilter.java:70)	at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)	at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:120)	at org.sonatype.nexus.web.internal.NexusGuiceFilter$MultiFilterChain.doFilter(NexusGuiceFilter.java:82)	at org.sonatype.nexus.web.internal.NexusGuiceFilter$MultiFilterPipeline.dispatch(NexusGuiceFilter.java:56)	at com.google.inject.servlet.GuiceFilter$1.call(GuiceFilter.java:132)	at com.google.inject.servlet.GuiceFilter$1.call(GuiceFilter.java:129)	at com.google.inject.servlet.GuiceFilter$Context.call(GuiceFilter.java:206)	at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:129)	at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)	at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)	at com.yammer.metrics.jetty.InstrumentedHandler.handle(InstrumentedHandler.java:200)	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)	at org.eclipse.jetty.server.Server.handle(Server.java:370)	at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)	at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:949)	at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1011)	at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)	at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)	at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)	at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:668)	at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)	at java.lang.Thread.run(Thread.java:745)