Issue Summary

Sometimes site admin or calendar owner unable to edit or delete certain event from team calendar in the confluence space. The error message displayed is 'Something went wrong. Please try again later.'

Steps to Reproduce

1. Navigate to the team calendar in the Confluence space at https://<domain>.atlassian.net/wiki/spaces/<SPACEKEY>/calendars.
2. Attempt to edit or delete the event.
3. Observe the error message: 'Something went wrong. Please try again later.'

Expected Results

The event should be deleted

Actual Results

The event doesn't delete and the following error message is displayed on the user interface:  Something went wrong. Please try again later.'

In HAR logs we can observe following error:

• Request URL: https://utas.atlassian.net/cgraphql?q=DeleteSubCalendarEvent
  Request Method:POST
  Status Code: 200 OK
  Remote Address: 13.35.248.5:443 

• [
      {
          "data": {
              "confluence_deleteSubCalendarEvent": {
                  "success": false,
                  "errors": [
                      {
                          "message": "calendar3.error.deleteevents.notexist",
                          "extensions": [],
                          "__typename": "MutationError"
                      }
                  ],
                  "__typename": "ConfluenceDeleteSubCalendarEventPayload"
              }
          }
      }
  ]  

Workaround

• Currently there is no known workaround for this behavior. A workaround will be added here when available