500 error page showing up on issue search

2014-10-09 20:05:51.208540500 Oct 9, 2014 8:05:51 PM org.apache.catalina.core.ApplicationDispatcher invoke
2014-10-09 20:05:51.208542500 SEVERE: Servlet.service() for servlet action threw exception
2014-10-09 20:05:51.208543500 java.lang.NumberFormatException: null
2014-10-09 20:05:51.208543500 	at java.lang.Long.parseLong(Long.java:375)
2014-10-09 20:05:51.208544500 	at java.lang.Long.valueOf(Long.java:525)
2014-10-09 20:05:51.208544500 	at com.atlassian.jira.plugin.issuenav.service.issuetable.IssueDocumentAndIdCollector.addMatch(IssueDocumentAndIdCollector.java:201)
2014-10-09 20:05:51.208555500 	at com.atlassian.jira.plugin.issuenav.service.issuetable.IssueDocumentAndIdCollector.computeResult(IssueDocumentAndIdCollector.java:189)
2014-10-09 20:05:51.208556500 	at com.atlassian.jira.plugin.issuenav.service.issuetable.AbstractIssueTableCreator.executeNormalSearch(AbstractIssueTableCreator.java:237)
2014-10-09 20:05:51.208557500 	at com.atlassian.jira.plugin.issuenav.service.issuetable.AbstractIssueTableCreator.create(AbstractIssueTableCreator.java:202)
2014-10-09 20:05:51.208565500 	at com.atlassian.jira.plugin.issuenav.service.issuetable.DefaultIssueTableService.createIssueTableFromCreator(DefaultIssueTableService.java:188)
2014-10-09 20:05:51.208566500 	at com.atlassian.jira.plugin.issuenav.service.issuetable.DefaultIssueTableService.getIssueTable(DefaultIssueTableService.java:302)
2014-10-09 20:05:51.208571500 	at com.atlassian.jira.plugin.issuenav.service.issuetable.DefaultIssueTableService.getIssueTableFromFilterWithJql(DefaultIssueTableService.java:124)
2014-10-09 20:05:51.208572500 	at com.atlassian.jira.plugin.issuenav.IssueNavAction.performSearch(IssueNavAction.java:1140)
2014-10-09 20:05:51.208573500 	at com.atlassian.jira.plugin.issuenav.IssueNavAction.doNav(IssueNavAction.java:368)
2014-10-09 20:05:51.208575500 	at com.atlassian.jira.plugin.issuenav.IssueNavAction.doDefault(IssueNavAction.java:243)
2014-10-09 20:05:51.208576500 	at sun.reflect.GeneratedMethodAccessor2721.invoke(Unknown Source)
2014-10-09 20:05:51.208576500 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
2014-10-09 20:05:51.208577500 	at java.lang.reflect.Method.invoke(Method.java:597)
2014-10-09 20:05:51.208578500 	at webwork.util.InjectionUtils$DefaultInjectionImpl.invoke(InjectionUtils.java:70)
2014-10-09 20:05:51.208579500 	at webwork.util.InjectionUtils.invoke(InjectionUtils.java:56)
2014-10-09 20:05:51.208580500 	at webwork.action.ActionSupport.invokeCommand(ActionSupport.java:438)
2014-10-09 20:05:51.208580500 	at webwork.action.ActionSupport.execute(ActionSupport.java:157)
2014-10-09 20:05:51.208581500 	at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:88)
2014-10-09 20:05:51.208590500 	at webwork.interceptor.DefaultInterceptorChain.proceed(DefaultInterceptorChain.java:39)
2014-10-09 20:05:51.208591500 	at webwork.interceptor.NestedInterceptorChain.proceed(NestedInterceptorChain.java:31)

2014-10-09 20:05:51.209202500 Oct 9, 2014 8:05:51 PM org.apache.catalina.core.StandardWrapperValve invoke
2014-10-09 20:05:51.209203500 SEVERE: Servlet.service() for servlet default threw exception
2014-10-09 20:05:51.209204500 java.lang.NumberFormatException: null
2014-10-09 20:05:51.209204500 	at java.lang.Long.parseLong(Long.java:375)
2014-10-09 20:05:51.209205500 	at java.lang.Long.valueOf(Long.java:525)
2014-10-09 20:05:51.209205500 	at com.atlassian.jira.plugin.issuenav.service.issuetable.IssueDocumentAndIdCollector.addMatch(IssueDocumentAndIdCollector.java:201)
2014-10-09 20:05:51.209210500 	at com.atlassian.jira.plugin.issuenav.service.issuetable.IssueDocumentAndIdCollector.computeResult(IssueDocumentAndIdCollector.java:189)
2014-10-09 20:05:51.209211500 	at com.atlassian.jira.plugin.issuenav.service.issuetable.AbstractIssueTableCreator.executeNormalSearch(AbstractIssueTableCreator.java:237)
2014-10-09 20:05:51.209212500 	at com.atlassian.jira.plugin.issuenav.service.issuetable.AbstractIssueTableCreator.create(AbstractIssueTableCreator.java:202)
2014-10-09 20:05:51.209215500 	at com.atlassian.jira.plugin.issuenav.service.issuetable.DefaultIssueTableService.createIssueTableFromCreator(DefaultIssueTableService.java:188)
2014-10-09 20:05:51.209216500 	at com.atlassian.jira.plugin.issuenav.service.issuetable.DefaultIssueTableService.getIssueTable(DefaultIssueTableService.java:302)
2014-10-09 20:05:51.209219500 	at com.atlassian.jira.plugin.issuenav.service.issuetable.DefaultIssueTableService.getIssueTableFromFilterWithJql(DefaultIssueTableService.java:124)
2014-10-09 20:05:51.209221500 	at com.atlassian.jira.plugin.issuenav.IssueNavAction.performSearch(IssueNavAction.java:1140)
2014-10-09 20:05:51.209221500 	at com.atlassian.jira.plugin.issuenav.IssueNavAction.doNav(IssueNavAction.java:368)
2014-10-09 20:05:51.209223500 	at com.atlassian.jira.plugin.issuenav.IssueNavAction.doDefault(IssueNavAction.java:243)
2014-10-09 20:05:51.209224500 	at sun.reflect.GeneratedMethodAccessor2721.invoke(Unknown Source)
2014-10-09 20:05:51.209225500 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
2014-10-09 20:05:51.209226500 	at java.lang.reflect.Method.invoke(Method.java:597)
2014-10-09 20:05:51.209227500 	at webwork.util.InjectionUtils$DefaultInjectionImpl.invoke(InjectionUtils.java:70)
2014-10-09 20:05:51.209228500 	at webwork.util.InjectionUtils.invoke(InjectionUtils.java:56)
2014-10-09 20:05:51.209229500 	at webwork.action.ActionSupport.invokeCommand(ActionSupport.java:438)
2014-10-09 20:05:51.209229500 	at webwork.action.ActionSupport.execute(ActionSupport.java:157)
2014-10-09 20:05:51.209230500 	at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:88)