@Klinge I have a configuration as you but the fetchInterval:
May it help butting this up to the config-part as:

config: {
        fetchInterval: 7 * 24 * 60 * 60 * 1000,

@MMRIZE you gave me the hint.
I have deleted the config-part of MMM-CalDAV and made the update again and it works fine.

So it seems the config was wrong. Now I have to understand your module and how it works.
Will play with env and learn about the play with calendar module.
Lets see if I get it :baby:

After update of MMM-CalDAV module MM is not more starting

@mumblebaj you are right. My bad!

Now it runs without failure but also without displaying the calendar.
I deleted already position: "bottom_left",

What module do I need to activate for display and how do I get the CalDAV module linked?

@MMRIZE

position: how do the MM know where to display?
serverUrl: seriously. Thansk!

.ics: you are right. That was a try after I got the error using credentials.
I wantet so see if this module is working.

Error shown by: npm run config:check

Your configuration file contains syntax errors :(

but I use

                {
                        module: "MMM-CalDAV",
                        position: "bottom_left",
                        config: {
                            name: "Test",
                              serverUrl: "https://DOMAIN.TDL/NEXTCLOUD/remote.php/dav/calendars/USER/pers%c3%b6nlich/"
                              credentials: {
                                username: "USER",
                                password: "GEHEIM",
                              },
                            vcalendarHeader: true
                        }
                },

@MMRIZE I tried it out but what I see is:

my config her should should show some entries for recycling stuff.
I didn’t use the credential stuff at this point.

                {
                        module: "MMM-CalDAV",
                        position: "bottom_left",
                        config: {
                            name: "Abfallkalender",
                            serverurl: "https://www.fes-frankfurt.de/abfallkalender/QWx0ZSBGYWhydHwxMXw2MDQzNw%3D%3D.ics",
                        vcalendarHeader: false
                        }
                },

Which calendar modul is able to get Nextcloud (WebDAV) calendars synchronized?

Since the release in which the digest fetch was removed I cant get my personal calendars visible where I need the authentication.

I did it within the URL in plain text. Hope there is a more secret way available now :winking_face:

url: "https://USERNAME:SECRET@DOMAIN.TLD/NextCloud/remote.php/dav/calendars/USERNAME/pers%c3%b6nlich?export"

@sdetweil thanks!!!
Will see how to solve the calendar issue.

@sdetweil yeah, now it works again :grinning_face:

What does it “note that we removed digest fetch in this release.” mean?
Is it I cant get calendar from nextcloud via webdav?

@sdetweil as I made

pm2 stop all
cd ~/MagicMirror
npm start >./somefile.txt 2>&1

it worked fine until CTRL + C

Yes the problem with the calendar is next I need help to fix. For now I wonder how to get MM starting after reboot again?