Evolution does not connect to caldav calender after update to 17.10

[Jürgen Kübler]

Error message:
The calendar backend servicing “xxx” encountered an error.
The reported error was “Failed to issue REPORT: HTTP error code 404 (Not Found)”.

Works with Thunderbird and Lightning

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: evolution 3.26.1-1
ProcVersionSignature: Ubuntu 4.13.0-12.13-generic 4.13.3
Uname: Linux 4.13.0-12-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.7-0ubuntu2
Architecture: amd64
CurrentDesktop: GNOME
Date: Fri Oct 6 12:38:09 2017
EcryptfsInUse: Yes
InstallationDate: Installed on 2017-08-02 (65 days ago)
InstallationMedia: Ubuntu-GNOME 17.04 "Zesty Zapus" - Release amd64 (20170412)
SourcePackage: evolution
UpgradeStatus: Upgraded to artful on 2017-10-06 (0 days ago)

[Jürgen Kübler (jk-ybn-sw)]

Was able to find the solution.

The URL now has to end with a slash "/".