Cannot modify calendar events. The error: "Cannot modify calendar object: Failed to put data: HTTP error code 412 (Precondition Failed)"
I'm using Evolution 3.32.1 (flatpak git) on Ubuntu 18.04.2 LTS. I receive an error when REEDITING an existing calendar item on Fastmail. The error:
- Failed to modify an event in the calendar “CalDAV : Calendar”
- Cannot modify calendar object: Failed to put data: HTTP error code 412 (Precondition Failed)
How to reproduce:
- In Evolution, connect add a FastMail calendar(server settings here)
- create an appointment (with some info)
- open the appointment, edit something, save
- edit something again, and click save. This time you get the error.
WORKAROUND: I've noticed that REFRESHING the calendar before re-editing makes the error go away
Edited by Ghost User