Confluence Questions notifications not working

@400000005339d4df2cdf05bc 2014-03-31 20:49:25,750 ERROR [AtlassianEvent::CustomizableThreadFactory-1] [plugins.questions.notification.QuestionsNotificationsSender] sendNotification Error sending notification
@400000005339d4df2cdf0d8c com.google.template.soy.tofu.SoyTofuException: In template Confluence.Templates.Mail.Notifications.questionAdd: When evaluating "contextPath()": Error while computing function "contextPath()": null
@400000005339d4df2cdf155c 	at com.google.template.soy.tofu.internal.BaseTofu.renderMainHelper(BaseTofu.java:341)
@400000005339d4df2d071b74 	at com.google.template.soy.tofu.internal.BaseTofu.renderMain(BaseTofu.java:300)
@400000005339d4df2d071f5c 	at com.google.template.soy.tofu.internal.BaseTofu.access$100(BaseTofu.java:56)
@400000005339d4df2d071f5c 	at com.google.template.soy.tofu.internal.BaseTofu$RendererImpl.render(BaseTofu.java:427)
@400000005339d4df2d072344 	at com.atlassian.soy.impl.DefaultSoyManager.render(DefaultSoyManager.java:117)
@400000005339d4df2d0732e4 	at com.atlassian.soy.impl.SoyTemplateRendererImpl.render(SoyTemplateRendererImpl.java:52)
@400000005339d4df2d0736cc 	at sun.reflect.GeneratedMethodAccessor955.invoke(Unknown Source)
@400000005339d4df2d073ab4 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
@400000005339d4df2d07a814 	at java.lang.reflect.Method.invoke(Method.java:597)
@400000005339d4df2d07abfc 	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
@400000005339d4df2d07abfc 	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)
@400000005339d4df2d07afe4 	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)
@400000005339d4df2d07bb9c 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
@400000005339d4df2d07bf84 	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
@400000005339d4df2d07bf84 	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
@400000005339d4df2d07c754 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
@400000005339d4df2d07cb3c 	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)
@400000005339d4df2d07cf24 	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)
@400000005339d4df2d07dadc 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
@400000005339d4df2d07dec4 	at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)
@400000005339d4df2d07e2ac 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
@400000005339d4df2d07e694 	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
@400000005339d4df2d07ea7c 	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
@400000005339d4df2d07ee64 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
@400000005339d4df2d08118c 	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
@400000005339d4df2d081574 	at $Proxy913.render(Unknown Source)
@400000005339d4df2d081574 	at com.atlassian.confluence.plugins.soy.ConfluenceSoyTemplateRenderer.renderTo(ConfluenceSoyTemplateRenderer.java:38)
@400000005339d4df2d082514 	at com.atlassian.confluence.renderer.template.DelegatingTemplateRenderer.renderTo(DelegatingTemplateRenderer.java:44)
@400000005339d4df2d0828fc 	at com.atlassian.confluence.renderer.template.DelegatingTemplateRenderer.renderTo(DelegatingTemplateRenderer.java:25)
@400000005339d4df2d082ce4 	at com.atlassian.confluence.mail.template.AbstractMailNotificationQueueItem.renderTemplate(AbstractMailNotificationQueueItem.java:316)
@400000005339d4df2d0834b4 	at com.atlassian.confluence.mail.template.PreRenderedMailNotificationQueueItem.access$301(PreRenderedMailNotificationQueueItem.java:53)
@400000005339d4df2d08389c 	at com.atlassian.confluence.mail.template.PreRenderedMailNotificationQueueItem$3.call(PreRenderedMailNotificationQueueItem.java:391)
@400000005339d4df2d083c84 	at com.atlassian.confluence.mail.template.PreRenderedMailNotificationQueueItem$3.call(PreRenderedMailNotificationQueueItem.java:387)
@400000005339d4df2d084454 	at com.atlassian.confluence.user.AuthenticatedUserImpersonator$2.call(AuthenticatedUserImpersonator.java:134)
@400000005339d4df2d084454 	at com.atlassian.confluence.user.AuthenticatedUserImpersonator$1.call(AuthenticatedUserImpersonator.java:113)
@400000005339d4df2d08483c 	at com.atlassian.confluence.user.AuthenticatedUserImpersonator.asUser(AuthenticatedUserImpersonator.java:89)
@400000005339d4df2d0853f4 	at com.atlassian.confluence.mail.template.PreRenderedMailNotificationQueueItem.renderTemplateForRecipient(PreRenderedMailNotificationQueueItem.java:386)
@400000005339d4df2d085bc4 	at com.atlassian.confluence.mail.template.PreRenderedMailNotificationQueueItem.access$100(PreRenderedMailNotificationQueueItem.java:53)
@400000005339d4df2d085fac 	at com.atlassian.confluence.mail.template.PreRenderedMailNotificationQueueItem$1.call(PreRenderedMailNotificationQueueItem.java:300)
@400000005339d4df2d08677c 	at com.atlassian.confluence.mail.template.PreRenderedMailNotificationQueueItem$1.call(PreRenderedMailNotificationQueueItem.java:296)
@400000005339d4df2d086b64 	at com.atlassian.confluence.mail.embed.ThreadLocalMimeBodyPartRecorder.record(ThreadLocalMimeBodyPartRecorder.java:61)
@400000005339d4df2d086f4c 	at com.atlassian.confluence.mail.template.PreRenderedMailNotificationQueueItem.recordDataSources(PreRenderedMailNotificationQueueItem.java:322)
@400000005339d4df2d08771c 	at com.atlassian.confluence.mail.template.PreRenderedMailNotificationQueueItem.renderTemplate(PreRenderedMailNotificationQueueItem.java:295)
@400000005339d4df2d0882d4 	at com.atlassian.confluence.mail.template.AbstractMailNotificationQueueItem.renderLegacyTemplate(AbstractMailNotificationQueueItem.java:309)
@400000005339d4df2d0886bc 	at com.atlassian.confluence.mail.template.AbstractMailNotificationQueueItem.preRenderBody(AbstractMailNotificationQueueItem.java:229)
@400000005339d4df2d088aa4 	at com.atlassian.confluence.mail.template.PreRenderedMailNotificationQueueItem$Builder.render(PreRenderedMailNotificationQueueItem.java:552)
@400000005339d4df2d089274 	at com.atlassian.confluence.plugins.questions.notification.PreRenderedMailNotificationTaskFactory.createNotificationTask(PreRenderedMailNotificationTaskFactory.java:48)
@400000005339d4df2d08965c 	at com.atlassian.confluence.plugins.questions.notification.QuestionsNotificationsSender$1.call(QuestionsNotificationsSender.java:224)
@400000005339d4df2d089e2c 	at com.atlassian.confluence.plugins.questions.notification.QuestionsNotificationsSender$1.call(QuestionsNotificationsSender.java:193)
@400000005339d4df2d08a214 	at com.atlassian.confluence.user.AuthenticatedUserImpersonator$2.call(AuthenticatedUserImpersonator.java:134)
@400000005339d4df2d08a5fc 	at com.atlassian.confluence.user.AuthenticatedUserImpersonator$1.call(AuthenticatedUserImpersonator.java:113)
@400000005339d4df2d08c154 	at com.atlassian.confluence.user.AuthenticatedUserImpersonator.asUser(AuthenticatedUserImpersonator.java:89)
@400000005339d4df2d08c53c 	at com.atlassian.confluence.plugins.questions.notification.QuestionsNotificationsSender.sendNotification(QuestionsNotificationsSender.java:192)
@400000005339d4df2d08c924 	at com.atlassian.confluence.plugins.questions.notification.QuestionsNotificationsSender.sendNotification(QuestionsNotificationsSender.java:183)
@400000005339d4df2d08d0f4 	at com.atlassian.confluence.plugins.questions.notification.QuestionsNotificationsSender.sendNotifications(QuestionsNotificationsSender.java:175)
@400000005339d4df2d08d4dc 	at com.atlassian.confluence.plugins.questions.notification.QuestionsNotificationsSender.sendNotifications(QuestionsNotificationsSender.java:95)
@400000005339d4df2d08dcac 	at com.atlassian.confluence.plugins.questions.notification.QuestionNotificationsListener.sendQuestionCreatedNotification(QuestionNotificationsListener.java:268)
@400000005339d4df2d08e094 	at com.atlassian.confluence.plugins.questions.notification.QuestionNotificationsListener.access$600(QuestionNotificationsListener.java:53)
@400000005339d4df2d08f034 	at com.atlassian.confluence.plugins.questions.notification.QuestionNotificationsListener$3.apply(QuestionNotificationsListener.java:225)
@400000005339d4df2d08f41c 	at com.atlassian.confluence.plugins.questions.notification.QuestionNotificationsListener$3.apply(QuestionNotificationsListener.java:207)
@400000005339d4df2d08f804 	at com.atlassian.fugue.Option$Some.foreach(Option.java:393)
@400000005339d4df2d08fbec 	at com.atlassian.confluence.plugins.questions.notification.QuestionNotificationsListener.handleQuestionsEvent(QuestionNotificationsListener.java:206)
@400000005339d4df2d08ffd4 	at com.atlassian.confluence.plugins.questions.notification.QuestionNotificationsListener.handleEvent(QuestionNotificationsListener.java:118)
@400000005339d4df2d0903bc 	at com.atlassian.confluence.plugins.questions.notification.QuestionNotificationsListener.access$000(QuestionNotificationsListener.java:53)
@400000005339d4df2d090b8c 	at com.atlassian.confluence.plugins.questions.notification.QuestionNotificationsListener$1.doInTransaction(QuestionNotificationsListener.java:95)
@400000005339d4df2d090f74 	at com.atlassian.sal.core.transaction.HostContextTransactionTemplate$1.doInTransaction(HostContextTransactionTemplate.java:25)
@400000005339d4df2d091b2c 	at com.atlassian.sal.spring.component.SpringHostContextAccessor$1.doInTransaction(SpringHostContextAccessor.java:88)
@400000005339d4df2d091f14 	at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:128)
@400000005339d4df2d0922fc 	at com.atlassian.sal.spring.component.SpringHostContextAccessor.doInTransaction(SpringHostContextAccessor.java:82)
@400000005339d4df2d092acc 	at sun.reflect.GeneratedMethodAccessor92.invoke(Unknown Source)
@400000005339d4df2d092acc 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
@400000005339d4df2d092eb4 	at java.lang.reflect.Method.invoke(Method.java:597)
@400000005339d4df2d09329c 	at com.atlassian.plugin.osgi.hostcomponents.impl.DefaultComponentRegistrar$ContextClassLoaderSettingInvocationHandler.invoke(DefaultComponentRegistrar.java:129)
@400000005339d4df2d093a6c 	at $Proxy219.doInTransaction(Unknown Source)
@400000005339d4df2d093a6c 	at sun.reflect.GeneratedMethodAccessor92.invoke(Unknown Source)
@400000005339d4df2d093e54 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
@400000005339d4df2d093e54 	at java.lang.reflect.Method.invoke(Method.java:597)
@400000005339d4df2d094a0c 	at com.atlassian.plugin.osgi.bridge.external.HostComponentFactoryBean$DynamicServiceInvocationHandler.invoke(HostComponentFactoryBean.java:154)
@400000005339d4df2d094df4 	at $Proxy219.doInTransaction(Unknown Source)
@400000005339d4df2d094df4 	at com.atlassian.sal.core.transaction.HostContextTransactionTemplate.execute(HostContextTransactionTemplate.java:21)
@400000005339d4df2d0951dc 	at sun.reflect.GeneratedMethodAccessor111.invoke(Unknown Source)
@400000005339d4df2d09617c 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
@400000005339d4df2d096564 	at java.lang.reflect.Method.invoke(Method.java:597)
@400000005339d4df2d096564 	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:307)
@400000005339d4df2d09694c 	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.doInvoke(ServiceInvoker.java:58)
@400000005339d4df2d09711c 	at org.springframework.osgi.service.importer.support.internal.aop.ServiceInvoker.invoke(ServiceInvoker.java:62)
@400000005339d4df2d097504 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
@400000005339d4df2d0978ec 	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
@400000005339d4df2d0980bc 	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
@400000005339d4df2d0984a4 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
@400000005339d4df2d09888c 	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged(ServiceTCCLInterceptor.java:56)
@400000005339d4df2d09905c 	at org.springframework.osgi.service.util.internal.aop.ServiceTCCLInterceptor.invoke(ServiceTCCLInterceptor.java:39)
@400000005339d4df2d099444 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
@400000005339d4df2d09982c 	at org.springframework.osgi.service.importer.support.LocalBundleContextAdvice.invoke(LocalBundleContextAdvice.java:59)
@400000005339d4df2d099ffc 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
@400000005339d4df2d099ffc 	at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed(DelegatingIntroductionInterceptor.java:131)
@400000005339d4df2d09a3e4 	at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke(DelegatingIntroductionInterceptor.java:119)
@400000005339d4df2d09af9c 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
@400000005339d4df2d09b384 	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
@400000005339d4df2d09b76c 	at $Proxy1238.execute(Unknown Source)
@400000005339d4df2d09b76c 	at com.atlassian.confluence.plugins.questions.notification.QuestionNotificationsListener.handleEventInTransaction(QuestionNotificationsListener.java:90)
@400000005339d4df2d09bf3c 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
@400000005339d4df2d09c324 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
@400000005339d4df2d09c70c 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
@400000005339d4df2d09c70c 	at java.lang.reflect.Method.invoke(Method.java:597)
@400000005339d4df2d09cedc 	at com.atlassian.event.internal.SingleParameterMethodListenerInvoker.invoke(SingleParameterMethodListenerInvoker.java:36)
@400000005339d4df2d09d2c4 	at com.atlassian.event.internal.AsynchronousAbleEventDispatcher$1$1.run(AsynchronousAbleEventDispatcher.java:46)
@400000005339d4df2d09de7c 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
@400000005339d4df2d09e264 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
@400000005339d4df2d09e64c 	at java.lang.Thread.run(Thread.java:662)