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java.util.ConcurrentModificationException: null at java.util.LinkedHashMap$LinkedHashIterator.nextNode(LinkedHashMap.java:719)[na:1.8.0_102] at java.util.LinkedHashMap$LinkedEntryIterator.next(LinkedHashMap.java:752)[na:1.8.0_102] at java.util.LinkedHashMap$LinkedEntryIterator.next(LinkedHashMap.java:750)[na:1.8.0_102] at com.sonatype.nexus.repository.npm.internal.NpmHostedComponentMaintenanceImpl.deleteTarball(NpmHostedComponentMaintenanceImpl.java:114)[na:na] at com.sonatype.nexus.repository.npm.internal.NpmHostedComponentMaintenanceImpl.deleteAssetTx(NpmHostedComponentMaintenanceImpl.java:75)[na:na] at java.lang.Iterable.forEach(Iterable.java:75)[na:1.8.0_102] at com.sonatype.nexus.repository.npm.internal.NpmHostedComponentMaintenanceImpl.deleteComponentTx(NpmHostedComponentMaintenanceImpl.java:49)[na:na] at org.sonatype.nexus.transaction.TransactionalWrapper.proceedWithTransaction(TransactionalWrapper.java:54)[na:na] at org.sonatype.nexus.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:53)[na:na] at org.sonatype.nexus.repository.storage.DefaultComponentMaintenanceImpl.deleteComponent(DefaultComponentMaintenanceImpl.java:47)[na:na] at org.sonatype.nexus.repository.storage.ComponentMaintenance$deleteComponent.call(Unknown Source)[na:na] at org.sonatype.nexus.coreui.ComponentComponent$_deleteComponent_closure1.doCall(ComponentComponent.groovy:305)[na:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[na:1.8.0_102] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)[na:1.8.0_102] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[na:1.8.0_102] at java.lang.reflect.Method.invoke(Method.java:498)[na:1.8.0_102] at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)[na:na] at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)[na:na] at org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:294)[na:na] at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1019)[na:na] at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.call(PogoMetaClassSite.java:42)[na:na] at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:133)[na:na] at org.sonatype.nexus.coreui.ComponentComponent.deleteEntity(ComponentComponent.groovy:324)[na:na] at org.sonatype.nexus.coreui.ComponentComponent$deleteEntity.callCurrent(Unknown Source)[na:na] at org.sonatype.nexus.coreui.ComponentComponent.deleteComponent(ComponentComponent.groovy:304)[na:na] at org.sonatype.nexus.validation.internal.ValidationInterceptor.invoke(ValidationInterceptor.java:53)[na:na] at org.apache.shiro.guice.aop.AopAllianceMethodInvocationAdapter.proceed(AopAllianceMethodInvocationAdapter.java:49)[na:na] at org.apache.shiro.authz.aop.AuthorizingAnnotationMethodInterceptor.invoke(AuthorizingAnnotationMethodInterceptor.java:68)[na:na] at org.apache.shiro.guice.aop.AopAllianceMethodInterceptorAdapter.invoke(AopAllianceMethodInterceptorAdapter.java:36)[na:na] at sun.reflect.GeneratedMethodAccessor475.invoke(Unknown Source)[na:na] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)[na:1.8.0_102] at java.lang.reflect.Method.invoke(Method.java:498)[na:1.8.0_102] at com.softwarementors.extjs.djn.router.dispatcher.DispatcherBase.invokeJavaMethod(DispatcherBase.java:142)[org.sonatype.nexus.extdirect:3.0.1.01] at com.softwarementors.extjs.djn.router.dispatcher.DispatcherBase.invokeMethod(DispatcherBase.java:133)[org.sonatype.nexus.extdirect:3.0.1.01] at org.sonatype.nexus.extdirect.internal.ExtDirectServlet$3.invokeMethod(ExtDirectServlet.java:221)[org.sonatype.nexus.extdirect:3.0.1.01] at com.softwarementors.extjs.djn.router.dispatcher.DispatcherBase.dispatch(DispatcherBase.java:63)[org.sonatype.nexus.extdirect:3.0.1.01] at com.softwarementors.extjs.djn.router.processor.standard.StandardRequestProcessorBase.dispatchStandardMethod(StandardRequestProcessorBase.java:73)[org.sonatype.nexus.extdirect:3.0.1.01] at com.softwarementors.extjs.djn.router.processor.standard.json.JsonRequestProcessor.processIndividualRequest(JsonRequestProcessor.java:502)[org.sonatype.nexus.extdirect:3.0.1.01] at com.softwarementors.extjs.djn.router.processor.standard.json.JsonRequestProcessor.processIndividualRequestsInThisThread(JsonRequestProcessor.java:150)[org.sonatype.nexus.extdirect:3.0.1.01] at com.softwarementors.extjs.djn.router.processor.standard.json.JsonRequestProcessor.process(JsonRequestProcessor.java:133)[org.sonatype.nexus.extdirect:3.0.1.01] at com.softwarementors.extjs.djn.router.RequestRouter.processJsonRequest(RequestRouter.java:83)[org.sonatype.nexus.extdirect:3.0.1.01] at com.softwarementors.extjs.djn.servlet.DirectJNgineServlet.processRequest(DirectJNgineServlet.java:617)[org.sonatype.nexus.extdirect:3.0.1.01] at com.softwarementors.extjs.djn.servlet.DirectJNgineServlet.doPost(DirectJNgineServlet.java:580)[org.sonatype.nexus.extdirect:3.0.1.01] at org.sonatype.nexus.extdirect.internal.ExtDirectServlet.doPost(ExtDirectServlet.java:127)[org.sonatype.nexus.extdirect:3.0.1.01] at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)[javax.servlet-api:3.1.0] at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)[javax.servlet-api:3.1.0] at com.google.inject.servlet.ServletDefinition.doServiceImpl(ServletDefinition.java:287)[com.google.inject:4.0.0] at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:277)[com.google.inject:4.0.0] at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:182)[com.google.inject:4.0.0] at com.google.inject.servlet.DynamicServletPipeline.service(DynamicServletPipeline.java:71)[com.google.inject:4.0.0] at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:85)[com.google.inject:4.0.0] at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:112)[org.apache.shiro.web:1.2.4] at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)[com.google.inject:4.0.0] at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:112)[org.apache.shiro.web:1.2.4] at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)[com.google.inject:4.0.0] at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61)[org.apache.shiro.web:1.2.4] at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108)[org.apache.shiro.web:1.2.4] at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137)[org.apache.shiro.web:1.2.4] at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)[org.apache.shiro.web:1.2.4] at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66)[org.apache.shiro.web:1.2.4] at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449)[org.apache.shiro.web:1.2.4] at org.sonatype.nexus.security.SecurityFilter.executeChain(SecurityFilter.java:85)[org.sonatype.nexus.security:3.0.1.01] at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365)[org.apache.shiro.web:1.2.4] at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90)[org.apache.shiro.core:1.2.4] at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83)[org.apache.shiro.core:1.2.4] at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383)[org.apache.shiro.core:1.2.4] at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362)[org.apache.shiro.web:1.2.4] at org.sonatype.nexus.security.SecurityFilter.doFilterInternal(SecurityFilter.java:101)[org.sonatype.nexus.security:3.0.1.01] at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125)[org.apache.shiro.web:1.2.4] at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)[com.google.inject:4.0.0] at com.codahale.metrics.servlet.AbstractInstrumentedFilter.doFilter(AbstractInstrumentedFilter.java:97)[com.codahale.metrics.servlet:3.0.2] at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)[com.google.inject:4.0.0] at org.sonatype.nexus.internal.web.ErrorPageFilter.doFilter(ErrorPageFilter.java:63)[org.sonatype.nexus.base:3.0.1.01] at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)[com.google.inject:4.0.0] at org.sonatype.nexus.internal.web.EnvironmentFilter.doFilter(EnvironmentFilter.java:97)[org.sonatype.nexus.base:3.0.1.01] at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:82)[com.google.inject:4.0.0] at com.google.inject.servlet.DynamicFilterPipeline.dispatch(DynamicFilterPipeline.java:104)[com.google.inject:4.0.0] at com.google.inject.servlet.GuiceFilter$1.call(GuiceFilter.java:133)[com.google.inject:4.0.0] at com.google.inject.servlet.GuiceFilter$1.call(GuiceFilter.java:130)[com.google.inject:4.0.0] at com.google.inject.servlet.GuiceFilter$Context.call(GuiceFilter.java:203)[com.google.inject:4.0.0] at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:130)[com.google.inject:4.0.0] at org.sonatype.nexus.bootstrap.osgi.DelegatingFilter.doFilter(DelegatingFilter.java:73)[org.sonatype.nexus.bootstrap:3.0.1.01] at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1668)[org.eclipse.jetty.servlet:9.3.7.v20160115] at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:581)[org.eclipse.jetty.servlet:9.3.7.v20160115] at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)[org.eclipse.jetty.server:9.3.7.v20160115] at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)[org.eclipse.jetty.security:9.3.7.v20160115] at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)[org.eclipse.jetty.server:9.3.7.v20160115] at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1158)[org.eclipse.jetty.server:9.3.7.v20160115] at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:511)[org.eclipse.jetty.servlet:9.3.7.v20160115] at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)[org.eclipse.jetty.server:9.3.7.v20160115] at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1090)[org.eclipse.jetty.server:9.3.7.v20160115] at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)[org.eclipse.jetty.server:9.3.7.v20160115] at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:119)[org.eclipse.jetty.server:9.3.7.v20160115] at com.codahale.metrics.jetty9.InstrumentedHandler.handle(InstrumentedHandler.java:175)[com.codahale.metrics.jetty9:3.0.2] at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:109)[org.eclipse.jetty.server:9.3.7.v20160115] at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:119)[org.eclipse.jetty.server:9.3.7.v20160115] at org.eclipse.jetty.server.Server.handle(Server.java:517)[org.eclipse.jetty.server:9.3.7.v20160115] at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:308)[org.eclipse.jetty.server:9.3.7.v20160115] at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:242)[org.eclipse.jetty.server:9.3.7.v20160115] at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:273)[org.eclipse.jetty.io:9.3.7.v20160115] at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)[org.eclipse.jetty.io:9.3.7.v20160115] at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:75)[org.eclipse.jetty.io:9.3.7.v20160115] at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:213)[org.eclipse.jetty.util:9.3.7.v20160115] at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:147)[org.eclipse.jetty.util:9.3.7.v20160115] at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)[org.eclipse.jetty.util:9.3.7.v20160115] at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)[org.eclipse.jetty.util:9.3.7.v20160115] at java.lang.Thread.run(Thread.java:745)[na:1.8.0_102]