Crash when generating subscription email

Get the following message emailed to me subscribing to a filter I created...

An error occurred whilst rendering this message. Please contact the administrators, and inform them of this bug. Details: ------- org.apache.velocity.exception.MethodInvocationException: Invocation of method 'getDescription' in class com.atlassian.jira.issue.search.SearchRequestUtils threw exception class java.lang.NullPointerException : null at org.apache.velocity.runtime.parser.node.ASTMethod.execute(ASTMethod.java:246) at org.apache.velocity.runtime.parser.node.ASTReference.execute(ASTReference.java:175) at org.apache.velocity.runtime.parser.node.ASTReference.render(ASTReference.java:220) at org.apache.velocity.runtime.parser.node.ASTBlock.render(ASTBlock.java:55) at org.apache.velocity.runtime.directive.Foreach.render(Foreach.java:166) at org.apache.velocity.runtime.parser.node.ASTDirective.render(ASTDirective.java:114) at org.apache.velocity.runtime.parser.node.SimpleNode.render(SimpleNode.java:230) at org.apache.velocity.Template.merge(Template.java:256) at org.apache.velocity.app.VelocityEngine.mergeTemplate(VelocityEngine.java:450) at com.atlassian.velocity.DefaultVelocityManager.getEncodedBody(DefaultVelocityManager.java:97) at com.atlassian.jira.mail.MailingListCompiler.sendLists(MailingListCompiler.java:142) at com.atlassian.jira.mail.MailingListCompiler.sendLists(MailingListCompiler.java:106) at com.atlassian.jira.mail.SubscriptionMailQueueItem.sendSearchRequestEmail(SubscriptionMailQueueItem.java:87) at com.atlassian.jira.mail.SubscriptionMailQueueItem.send(SubscriptionMailQueueItem.java:69) at com.atlassian.mail.queue.MailQueueImpl.sendBuffer(MailQueueImpl.java:55) at com.atlassian.jira.service.services.mail.MailQueueService.run(MailQueueService.java:23) at com.atlassian.jira.service.JiraServiceContainer.run(JiraServiceContainer.java:53) at com.atlassian.jira.service.ServiceRunner.execute(ServiceRunner.java:50) at org.quartz.core.JobRunShell.run(JobRunShell.java:147) at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:387)