[Evolution] Error to connect to a calendar

[Sylvia Sánchez <lailahfsf gmail com>]

Hello everyone!

I'm using Fedora 24 Workstation and Evolution as calendar/email.  It's been already some two months doing so but now one of my calendars returns a connection error.

Specifically it says:  "HTTP error :  Unauthorised "

Any ideas about what it means and how to fix it?

Thanks in advance!

Sylvia