JIRA Calendars Are Not Displayed in Confluence Due to 500 Internal Server Error

Platform Notice: Data Center Only - This article only applies to Atlassian products on the Data Center platform.

Note that this KB was created for the Data Center version of the product. Data Center KBs for non-Data-Center-specific features may also work for Server versions of the product, however they have not been tested. Support for Server* products ended on February 15th 2024. If you are running a Server product, you can visit the Atlassian Server end of support announcement to review your migration options.

*Except Fisheye and Crucible

Symptoms

JIRA Calendars are not displayed (empty) in Confluence and the following appears in the atlassian-confluence.log:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 2012-11-29 21:27:55,459 ERROR [http-8090-3] [extra.calendar3.rest.CalendarResource] doInTransaction Unable to load events of sub-calendar c9f14da8-5e70-4b0f-825c-e25a929b6b6d -- referer: http://confluence.wem-uat.local/dashboard.action | url: /rest/calendar-services/1.0/calendar/events.json | userName: tetleyp com.atlassian.confluence.extra.calendar3.exception.CalendarException at com.atlassian.confluence.extra.calendar3.calendarstore.JiraCalendarDataStore.getSubCalendarContentInternal(JiraCalendarDataStore.java:590) at com.atlassian.confluence.extra.calendar3.calendarstore.JiraCalendarDataStore.getSubCalendarContentInternal(JiraCalendarDataStore.java:90) .... at java.lang.Thread.run(Thread.java:662) Caused by: com.atlassian.confluence.extra.calendar3.calendarstore.DefaultJiraAccessor$ApiEndPointNotFoundException at com.atlassian.confluence.extra.calendar3.calendarstore.DefaultJiraAccessor$5.handle(DefaultJiraAccessor.java:498) at com.atlassian.confluence.extra.calendar3.calendarstore.DefaultJiraAccessor$5.handle(DefaultJiraAccessor.java:475) .... 2012-11-29 21:27:55,459 ERROR [http-8090-3] [jersey.spi.container.ContainerResponse] logException Mapped exception to response: 500 (Internal Server Error) -- referer: http://confluence.wem-uat.local/dashboard.action | url: /rest/calendar-services/1.0/calendar/events.json | userName: tetleyp javax.ws.rs.WebApplicationException at com.atlassian.confluence.extra.calendar3.rest.CalendarResource$7.doInTransaction(CalendarResource.java:652) at com.atlassian.confluence.extra.calendar3.rest.CalendarResource$7.doInTransaction(CalendarResource.java:589) ....

Cause

Team Calendars for Confluence in Confluence is not able to communicate to JIRA. This may be due to application links configured incorrectly or the Team Calendars for Confluence within JIRA is not installed/enabled.

Resolution

  • Ensure that the Trusted Application Links in Confluence and JIRA are configured correctly. Please refer to the following documentation for more info: Integrating Jira and Confluence

  • Check if Team Calendars for Confluence for JIRA is installed and enabled in JIRA

  • Ensure that there is no firewall blocking the connection between Confluence and JIRA

Updated on April 8, 2025

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