Issue Summary

When accessing the team calendar in Confluence, an empty error on the top of the calendar is shown, without any specific reason

Steps to Reproduce

1. Insert a Jira team calendar in a Confluence page.
2. Just certain calendars shows the error, not all of them.

Expected Results

The events are loaded without errors in the team calendar

Actual Results

The below exception is thrown in the netowrk communication:

500 Internal Server Error
    {empty: false} 

Workaround

Remove the calendar events from the specific projects that are showing the empty error.