Summary

In some cases, the JIRA Issues Calendar Gadget displays an error on the JIRA Dashboard and does not display - it cannot be edited and new Calendar objects added have the same problem.

Environment

• Atlassian Cloud instances running JIRA 7.X

Steps to Reproduce

1. Open a dashboard and click add gadget
2. Search for the JIRA Issues Calendar gadget and add it to the page
   or
3. Open a dashboard with an existing JIRA Issues Calendar gadget

Expected Results

• The JIRA Issues Calendar gadget displays a configuration window on the dashboard
  or
• The JIRA Issues Calendar displays a calendar

Actual Results

An error appears on the page where the JIRA Issues Macro should be:
"An internal server error occurred when requesting resource".

In the development tools console the following error appears:

Failed to load resource: the server responded with a status of 500 (Internal Server Error)
https://<Customer_URL>/rest/calendar-plugin/1.0/calendar/htmlcalendar/config/datefields?_=144106859...

An error is seen in the logs:

/rest/calendar-plugin/1.0/calendar/htmlcalendar/config/datefields [c.a.p.r.c.error.jersey.ThrowableExceptionMapper] Uncaught exception thrown by REST service: com.atlassian.jira.security.JiraAuthenticationContext.getLoggedInUser()Lcom/atlassian/crowd/embedded/api/User;
2015-09-01 11:24:00.972843500 java.lang.NoSuchMethodError: com.atlassian.jira.security.JiraAuthenticationContext.getLoggedInUser()Lcom/atlassian/crowd/embedded/api/User;
...

Workaround

There is no workaround