Filter subscription mail sending fails with NullPointerException

2016-03-10 01:05:00,003 Sending mailitem com.atlassian.jira.mail.SubscriptionMailQueueItem owner: 'XXXXXXXXX' ERROR anonymous    Mail Queue Service [c.a.jira.mail.SubscriptionMailQueueItem]
java.lang.NullPointerException
        at com.atlassian.jira.issue.search.providers.DualSearchProvider.canQueryRunInDatabase(DualSearchProvider.java:189)
        at com.atlassian.jira.issue.search.providers.DualSearchProvider.performSearch(DualSearchProvider.java:136)
        at com.atlassian.jira.issue.search.providers.DualSearchProvider.search(DualSearchProvider.java:79)
        at com.atlassian.jira.mail.SubscriptionMailQueueItem.getContextParams(SubscriptionMailQueueItem.java:278)
        at com.atlassian.jira.mail.SubscriptionMailQueueItem.sendSearchRequestEmail(SubscriptionMailQueueItem.java:145)
        at com.atlassian.jira.mail.SubscriptionMailQueueItem.send(SubscriptionMailQueueItem.java:127)
        at com.atlassian.mail.queue.MailQueueImpl.sendBuffer(MailQueueImpl.java:66)
        at com.atlassian.jira.mail.JiraMailQueue$1.apply(JiraMailQueue.java:51)
        at com.atlassian.jira.mail.JiraMailQueue$1.apply(JiraMailQueue.java:48)
        at com.atlassian.jira.util.velocity.DefaultVelocityRequestContextFactory.runWithStaticBaseUrl(DefaultVelocityRequestContextFactory.java:110)
        at com.atlassian.jira.util.DefaultBaseUrl.runWithStaticBaseUrl(DefaultBaseUrl.java:50)
        at com.atlassian.jira.mail.JiraMailQueue.sendBuffer(JiraMailQueue.java:48)
        at com.atlassian.jira.service.services.mail.MailQueueService.run(MailQueueService.java:21)
        at com.atlassian.jira.service.JiraServiceContainerImpl.run(JiraServiceContainerImpl.java:61)
        at com.atlassian.jira.service.ServiceRunner.runService(ServiceRunner.java:62)
        at com.atlassian.jira.service.ServiceRunner.runServiceId(ServiceRunner.java:44)
        at com.atlassian.jira.service.ServiceRunner.runJob(ServiceRunner.java:32)
        at com.atlassian.scheduler.core.JobLauncher.runJob(JobLauncher.java:153)
        at com.atlassian.scheduler.core.JobLauncher.launchAndBuildResponse(JobLauncher.java:118)
        at com.atlassian.scheduler.core.JobLauncher.launch(JobLauncher.java:97)
        at com.atlassian.scheduler.caesium.impl.CaesiumSchedulerService.launchJob(CaesiumSchedulerService.java:401)
        at com.atlassian.scheduler.caesium.impl.CaesiumSchedulerService.executeLocalJob(CaesiumSchedulerService.java:369)
        at com.atlassian.scheduler.caesium.impl.CaesiumSchedulerService.executeQueuedJob(CaesiumSchedulerService.java:347)
        at com.atlassian.scheduler.caesium.impl.CaesiumSchedulerService$1.consume(CaesiumSchedulerService.java:255)
        at com.atlassian.scheduler.caesium.impl.CaesiumSchedulerService$1.consume(CaesiumSchedulerService.java:252)
        at com.atlassian.scheduler.caesium.impl.SchedulerQueueWorker.executeJob(SchedulerQueueWorker.java:65)
        at com.atlassian.scheduler.caesium.impl.SchedulerQueueWorker.executeNextJob(SchedulerQueueWorker.java:59)
        at com.atlassian.scheduler.caesium.impl.SchedulerQueueWorker.run(SchedulerQueueWorker.java:34)
        at java.lang.Thread.run(Thread.java:745)