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java.util.ConcurrentModificationException: 	at java.util.HashMap$HashIterator.nextEntry(HashMap.java:922)	at java.util.HashMap$EntryIterator.next(HashMap.java:962)	at java.util.HashMap$EntryIterator.next(HashMap.java:960)	at org.zanata.action.VersionHome.disableSelectedLocales(VersionHome.java:852)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.jboss.seam.util.Reflections.invoke(Reflections.java:22)	at org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationContext.java:32)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:56)	at org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInterceptor.java:28)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionInterceptor.java:79)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.transaction.TransactionInterceptor$1.work(TransactionInterceptor.java:97)	at org.jboss.seam.util.Work.workInTransaction(Work.java:61)	at org.jboss.seam.transaction.TransactionInterceptor.aroundInvoke(TransactionInterceptor.java:91)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextInterceptor.java:44)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.security.SecurityInterceptor.aroundInvoke(SecurityInterceptor.java:163)	at org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationContext.java:68)	at org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:107)	at org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBeanInterceptor.java:196)	at org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.java:114)	at org.zanata.action.VersionHome_$$_javassist_seam_40.disableSelectedLocales(VersionHome_$$_javassist_seam_40.java)	at sun.reflect.GeneratedMethodAccessor9167.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:606)	at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:335)	at org.jboss.el.util.ReflectionUtil.invokeMethod(ReflectionUtil.java:280)	at org.jboss.el.parser.AstMethodSuffix.getValue(AstMethodSuffix.java:59)	at org.jboss.el.parser.AstMethodSuffix.invoke(AstMethodSuffix.java:65)	at org.jboss.el.parser.AstValue.invoke(AstValue.java:96)	at org.jboss.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:276)	at com.sun.faces.facelets.el.ContextualCompositeMethodExpression.invoke(ContextualCompositeMethodExpression.java:192)	at com.sun.faces.facelets.tag.TagAttributeImpl$AttributeLookupMethodExpression.invoke(TagAttributeImpl.java:450)	at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:87)	at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:101)	at net.bull.javamelody.JsfActionListener.processAction(JsfActionListener.java:64)	at javax.faces.component.UICommand.broadcast(UICommand.java:315)	at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:786)	at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:1251)	at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:81)	at com.sun.faces.lifecycle.Phase.doPhase(Phase.java:101)	at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:118)	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:593)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:295)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)	at net.bull.javamelody.MonitoringFilter.doFilter(MonitoringFilter.java:164)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)	at org.tuckey.web.filters.urlrewrite.RuleChain.handleRewrite(RuleChain.java:176)	at org.tuckey.web.filters.urlrewrite.RuleChain.doRules(RuleChain.java:145)	at org.tuckey.web.filters.urlrewrite.UrlRewriter.processRequest(UrlRewriter.java:92)	at org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:389)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)	at org.jboss.seam.web.LoggingFilter.doFilter(LoggingFilter.java:60)	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)	at org.jboss.seam.web.MultipartFilter.doFilter(MultipartFilter.java:90)	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)	at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)	at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)	at org.jboss.seam.servlet.SeamFilter.doFilter(SeamFilter.java:158)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)	at org.zanata.seam.interceptor.MonitoringWrapper.doFilter(MonitoringWrapper.java:67)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)	at org.zanata.servlet.GWTCacheControlFilter.doFilter(GWTCacheControlFilter.java:61)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)	at org.zanata.servlet.MDCInsertingServletFilter.doFilter(MDCInsertingServletFilter.java:70)	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:246)	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:214)	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:231)	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:149)	at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50)	at org.jboss.as.jpa.interceptor.WebNonTxEmCloserValve.invoke(WebNonTxEmCloserValve.java:50)	at org.jboss.security.negotiation.NegotiationAuthenticator$WrapperValve.invoke(NegotiationAuthenticator.java:490)	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:420)	at org.jboss.as.web.security.SecurityContextAssociationValve.invoke(SecurityContextAssociationValve.java:169)	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:150)	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:97)	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:102)	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:344)	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:854)	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:653)	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:926)	at java.lang.Thread.run(Thread.java:745)