No problem, i removed fragments from the share link and named them like my list above, sorted by size, cal-8 is the smallest filesize.
> magicmirror@2.26.0 start
> DISPLAY="${DISPLAY:=:0}" ./node_modules/.bin/electron js/electron.js
[20.03.2024 15:28.52.845] [LOG] Starting MagicMirror: v2.26.0
[20.03.2024 15:28.52.851] [LOG] Loading config ...
[20.03.2024 15:28.52.856] [DEBUG] config template file not exists, no envsubst
[20.03.2024 15:28.52.862] [LOG] Loading module helpers ...
[20.03.2024 15:28.52.864] [LOG] No helper found for module: alert.
[20.03.2024 15:28.52.898] [LOG] Initializing new module helper ...
[20.03.2024 15:28.52.898] [LOG] Module helper loaded: updatenotification
[20.03.2024 15:28.52.900] [LOG] No helper found for module: clock.
[20.03.2024 15:28.53.231] [LOG] Initializing new module helper ...
[20.03.2024 15:28.53.232] [LOG] Module helper loaded: calendar
[20.03.2024 15:28.53.234] [LOG] No helper found for module: MMM-CalendarExt3.
[20.03.2024 15:28.53.235] [LOG] All module helpers loaded.
[20.03.2024 15:28.53.244] [LOG] Starting server on port 8080 ...
[20.03.2024 15:28.53.275] [LOG] Server started ...
[20.03.2024 15:28.53.278] [LOG] Connecting socket for: updatenotification
[20.03.2024 15:28.53.280] [LOG] Starting module helper: updatenotification
[20.03.2024 15:28.53.281] [LOG] Connecting socket for: calendar
[20.03.2024 15:28.53.282] [LOG] Starting node helper for: calendar
[20.03.2024 15:28.53.283] [LOG] Sockets connected & modules started ...
[20.03.2024 15:28.53.918] [LOG] Launching application.
[20.03.2024 15:28.57.031] [LOG] Create new calendarfetcher for url: https://p63-caldav.icloud.com/published/2/MTA-cal-2 - Interval: 3600000
[20.03.2024 15:28.57.194] [LOG] Create new calendarfetcher for url: https://p63-caldav.icloud.com/published/2/MTA-cal-4 - Interval: 3600000
[20.03.2024 15:28.57.198] [LOG] Create new calendarfetcher for url: https://p63-caldav.icloud.com/published/2/MTA-cal-3 - Interval: 3600000
[20.03.2024 15:28.57.201] [LOG] Create new calendarfetcher for url: https://p29-caldav.icloud.com/published/2/ODA-cal-1 - Interval: 3600000
[20.03.2024 15:28.57.205] [LOG] Create new calendarfetcher for url: https://p63-caldav.icloud.com/published/2/MTA-cal-5 - Interval: 3600000
[20.03.2024 15:28.57.208] [LOG] Create new calendarfetcher for url: https://i.cal.to/ical/3/borussiadortmund/bundesliga-spielplan/cal-6.ics - Interval: 3600000
[20.03.2024 15:28.57.217] [LOG] Create new calendarfetcher for url: https://i.cal.to/ical/77/nrw/ferien/cal-8.ics - Interval: 3600000
[20.03.2024 15:28.57.221] [LOG] Create new calendarfetcher for url: https://i.cal.to/ical/61/nrw/feiertage/cal-7.ics - Interval: 3600000
[20.03.2024 15:28.57.224] [INFO] updatenotification: Updater Class Loaded!
[20.03.2024 15:28.57.225] [INFO] updatenotification: Checking PM2 using...
[20.03.2024 15:28.57.227] [INFO] Checking git for module: MMM-CalendarExt3
[20.03.2024 15:28.57.290] [INFO] Checking git for module: MagicMirror
[20.03.2024 15:28.57.729] [INFO] Calendar-Fetcher: Broadcasting 2 events from https://i.cal.to/ical/61/nrw/feiertage/cal-7.ics.
[20.03.2024 15:28.57.825] [INFO] Calendar-Fetcher: Broadcasting 1 events from https://i.cal.to/ical/77/nrw/ferien/cal-8.ics.
[20.03.2024 15:28.59.069] [INFO] Calendar-Fetcher: Broadcasting 5 events from https://i.cal.to/ical/3/borussiadortmund/bundesliga-spielplan/cal-6.ics.
[20.03.2024 15:29.00.814] [INFO] Calendar-Fetcher: Broadcasting 4 events from https://p63-caldav.icloud.com/published/2/MTA-cal-5.
[20.03.2024 15:29.00.869] [INFO] updatenotification: You are using pm2 with MagicMirror
[20.03.2024 15:29.02.223] [INFO] Calendar-Fetcher: Broadcasting 1 events from https://p63-caldav.icloud.com/published/2/MTA-cal-4.
[20.03.2024 15:29.04.265] [INFO] Calendar-Fetcher: Broadcasting 7 events from https://p63-caldav.icloud.com/published/2/MTA-cal-3.
[20.03.2024 15:29.49.438] [INFO] Calendar-Fetcher: Broadcasting 8 events from https://p63-caldav.icloud.com/published/2/MTA-cal-2.
[20.03.2024 15:30.30.417] [INFO] Calendar-Fetcher: Broadcasting 12 events from https://p29-caldav.icloud.com/published/2/ODA-cal-1.