Bamboo notifications cannot find resources (ui.ftl) on build hanging event

similar to BAM-5197, the trigger is a build hang event notification.

2010-01-15 17:53:44,985 ERROR [BAM::Events:pool-1-thread-6] [BambooFreemarkerManager] Error resolving template
java.io.FileNotFoundException: Template freemarker-lib/ui.ftl not found.
at freemarker.template.Configuration.getTemplate(Configuration.java:489)
at freemarker.core.Environment.getTemplateForInclusion(Environment.java:1464)
at freemarker.core.Environment.getTemplateForImporting(Environment.java:1518)
at freemarker.core.Environment.importLib(Environment.java:1503)
at freemarker.template.Configuration.doAutoImportsAndIncludes(Configuration.java:843)
at freemarker.core.Configurable.doAutoImportsAndIncludes(Configurable.java:835)
at freemarker.core.Configurable.doAutoImportsAndIncludes(Configurable.java:835)
at freemarker.core.Environment.process(Environment.java:188)
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.qualcomm.ems.alm.bamboo.plugin.buildkiller.service.KillBuildNotification.renderContent(KillBuildNotification.java:94)
at com.qualcomm.ems.alm.bamboo.plugin.buildkiller.service.KillBuildNotification.getTextEmailContent(KillBuildNotification.java:74)
at com.atlassian.bamboo.notification.transports.MultipartEmailTransport.sendNotification(MultipartEmailTransport.java:59)
at com.atlassian.bamboo.notification.NotificationDispatcher.dispatchNotifications(NotificationDispatcher.java:59)
at com.qualcomm.ems.alm.bamboo.plugin.buildkiller.service.HungKillerServiceImpl.sendGlobalNotification(HungKillerServiceImpl.java:98)
at com.qualcomm.ems.alm.bamboo.plugin.buildkiller.service.HungKillerServiceImpl.killHungBuild(HungKillerServiceImpl.java:72)
at com.qualcomm.ems.alm.bamboo.plugin.buildkiller.HungEventListener.handleEvent(HungEventListener.java:39)
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)