I have a board with the Calendar Power Up that syncs to my Google Calendar. Normally this works well. However, I recently did some cleaning up on that board and deleted some cards that are no longer relevant for the project. One of these cards had had a due date, which I didn't remove before deleting the card.
The associated calendar entry for that due date still appears on my Google Calendar, and, of course, I can't delete it from the calendar, because it was put there by Trello. However, if I click the link in the appointment that should open the card I get an error message because that card does not exist.
Is there any way to remove that appointment from my Google Calendar, or will it linger as a ghost entry forever?