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java.util.ConcurrentModificationException: 	at java.util.AbstractList$Itr.checkForComodification(AbstractList.java:372)	at java.util.AbstractList$Itr.next(AbstractList.java:343)	at org.apache.commons.collections.iterators.AbstractIteratorDecorator.next(AbstractIteratorDecorator.java:67)	at org.apache.commons.collections.map.ListOrderedMap$ListOrderedIterator.next(ListOrderedMap.java:605)	at org.apache.commons.collections.map.ListOrderedMap$ValuesView$1.next(ListOrderedMap.java:476)	at freemarker.ext.beans.IteratorModel.next(IteratorModel.java:134)	at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:164)	at freemarker.core.Environment.visit(Environment.java:416)	at freemarker.core.IteratorBlock.accept(IteratorBlock.java:102)	at freemarker.core.Environment.visit(Environment.java:209)	at freemarker.core.MixedContent.accept(MixedContent.java:92)	at freemarker.core.Environment.visit(Environment.java:209)	at freemarker.core.ConditionalBlock.accept(ConditionalBlock.java:79)	at freemarker.core.Environment.visit(Environment.java:209)	at freemarker.core.MixedContent.accept(MixedContent.java:92)	at freemarker.core.Environment.visit(Environment.java:209)	at freemarker.core.ConditionalBlock.accept(ConditionalBlock.java:79)	at freemarker.core.Environment.visit(Environment.java:209)	at freemarker.core.MixedContent.accept(MixedContent.java:92)	at freemarker.core.Environment.visit(Environment.java:209)	at freemarker.core.Environment.process(Environment.java:189)	at freemarker.template.Template.process(Template.java:237)	at com.atlassian.bamboo.ww2.BambooFreemarkerManager.renderPageWithNoContext(BambooFreemarkerManager.java:419)	at com.atlassian.bamboo.ww2.BambooFreemarkerManager.renderPage(BambooFreemarkerManager.java:260)	at com.atlassian.bamboo.ww2.BambooFreemarkerManager.renderPage(BambooFreemarkerManager.java:236)	at com.atlassian.bamboo.ww2.BambooFreemarkerManager.render(BambooFreemarkerManager.java:305)	at com.atlassian.bamboo.notification.buildcompleted.AfterXFailedNotification.getTextEmailContent(AfterXFailedNotification.java:153)	at com.atlassian.bamboo.notification.transports.MultipartEmailTransport.sendNotification(MultipartEmailTransport.java:59)	at com.atlassian.bamboo.notification.NotificationDispatcher.dispatchNotifications(NotificationDispatcher.java:59)	at com.atlassian.bamboo.notification.buildcompleted.AfterXFailedBuildsNotificationListener.handleEvent(AfterXFailedBuildsNotificationListener.java:90)	at sun.reflect.GeneratedMethodAccessor382.invoke(Unknown Source)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)	at java.lang.reflect.Method.invoke(Method.java:597)	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:304)	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)	at org.springframework.orm.hibernate.HibernateInterceptor.invoke(HibernateInterceptor.java:117)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)	at $Proxy185.handleEvent(Unknown Source)	at com.atlassian.bamboo.event.BambooEventManager$2.run(BambooEventManager.java:47)	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)	at com.atlassian.bamboo.build.pipeline.concurrent.NamedThreadFactory$1.run(NamedThreadFactory.java:33)	at java.lang.Thread.run(Thread.java:619)