[Evolution] Evolution and Radicale Caldav server problem

[Johannes Winterhalter <info winterhalter org>]

Hello,

I run a Radicale server for caldav/carddav in my local network.  Evolution reads the calendars fine, but when I change an object or create one it tells:

Calendar Object cannot be changen. Data couldn't be send. HTTP-Error-Code 400 (Bad Request).  The same happens on multiple computers with Kali Linux and Opensuse Tumbleweed.

The server says:

Jan 10 09:29:53 mae env[917]: [2022-01-10 09:29:53 +0100] [917/Thread-3110] [WARNING] Bad PUT request on '/[calendar-object-name-shortende].ics': "In transformToNative, unhandled exception on line None: <class 'ValueError'>: at least one component is needed (<VTIMEZONE| [<TZID{}Europe/Berlin>, <X-LIC-LOCATION{}Europe/Berlin>]>)"

Jan 10 09:30:37 mae systemd[1]: /etc/systemd/system/radicale.service:1: Assignment outside of section. Ignoring.

What went wrong?

Johannes