Mac Calendar (Big Sur): Server responded with an error
My Calendar app on my Mac (running on Big Sur) is no longer working. Anytime I launch the app, I receive a "Server responded with an error message" and the app becomes inoperable. (Nothing happens when I click on any of the 3 options). I use this calendar to synch with my various google calendars, in case that is relevant. Thanks!
Screenshot:
MacBook Pro 13″, macOS 11.7