Hello all!
My question is about error messages encountered in the Calendar part of
evolution:
I frequently get the error
The calendar backend servicing "[calendar name]" encountered an error.
The reported error was “Failed to delete resource: HTTP error code 412
(Precondition failed): Sabre\DAV\Exception\PreconditionFailed
An If-Match header was specified and the resource did not exist
If-Match[exception][message][header]”.
Can you help me understand this error message?
How do I track down to source of this error and begin to fix it?
I'm concerned that this error suggests that I will have inconsistencies in
my calendars across my devices.
Best wishes
Kai
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