I read that post already, which allowed me to get the MM running again. I just commented out the lines indicated.

[2024-05-03 16:05:14.891] [LOG] [MMM-Pir] [LIB] [SCREEN] See you soon !
[2024-05-03 16:05:14.893] [LOG] [MMM-Pir] [LIB] [SCREEN] @bugsounet

Really… I have to delete this…

In all case, I’m happy that’s resolved.

[2024-05-03 16:05:02.668] [ERROR] Whoops! There was an uncaught exception…
[2024-05-03 16:05:02.677] [ERROR] ReferenceError: fetcher is not defined
at fetchCalendar (/home/pi/MagicMirror/modules/MMM-MyCalendar

yep

you didn’t get all the change from the linked issue

magicmirror@2.27.0 start
DISPLAY=“${DISPLAY:=:0}” ./node_modules/.bin/electron js/electron.js

[2024-05-03 16:04:55.886] [LOG] Starting MagicMirror: v2.27.0
[2024-05-03 16:04:55.935] [LOG] Loading config …
[2024-05-03 16:04:55.938] [LOG] config template file not exists, no envsubst
[2024-05-03 16:04:55.957] [LOG] Loading module helpers …
[2024-05-03 16:04:55.958] [LOG] No helper found for module: alert.
[2024-05-03 16:04:56.237] [LOG] Initializing new module helper …
[2024-05-03 16:04:56.239] [LOG] Module helper loaded: updatenotification
[2024-05-03 16:04:56.240] [LOG] No helper found for module: clock.
[2024-05-03 16:04:56.402] [LOG] Initializing new module helper …
[2024-05-03 16:04:56.403] [LOG] Module helper loaded: MMM-MyCalendar
[2024-05-03 16:04:56.403] [LOG] No helper found for module: calendar_monthly.
[2024-05-03 16:04:56.414] [LOG] Initializing new module helper …
[2024-05-03 16:04:56.414] [LOG] Module helper loaded: MMM-Pir
[2024-05-03 16:04:56.462] [LOG] Initializing new module helper …
[2024-05-03 16:04:56.462] [LOG] Module helper loaded: MMM-Weather
[2024-05-03 16:04:56.543] [LOG] Initializing new module helper …
[2024-05-03 16:04:56.544] [LOG] Module helper loaded: MMM-Tools
[2024-05-03 16:04:56.673] [LOG] Initializing new module helper …
[2024-05-03 16:04:56.674] [LOG] Module helper loaded: newsfeed
[2024-05-03 16:04:56.674] [LOG] All module helpers loaded.
[2024-05-03 16:04:56.685] [LOG] Starting server on port 8080 …
[2024-05-03 16:04:58.244] [LOG] Server started …
[2024-05-03 16:04:58.247] [LOG] Connecting socket for: updatenotification
[2024-05-03 16:04:58.248] [LOG] Starting module helper: updatenotification
[2024-05-03 16:04:58.250] [LOG] Connecting socket for: MMM-MyCalendar
[2024-05-03 16:04:58.261] [LOG] Starting node helper for: MMM-MyCalendar
[2024-05-03 16:04:58.262] [LOG] Connecting socket for: MMM-Pir
[2024-05-03 16:04:58.264] [LOG] Connecting socket for: MMM-Weather
[2024-05-03 16:04:58.272] [LOG] Connecting socket for: MMM-Tools
[2024-05-03 16:04:58.284] [LOG] [Tools] MMM-Tools Version: 2.1.7
[2024-05-03 16:04:58.286] [LOG] Connecting socket for: newsfeed
[2024-05-03 16:04:58.287] [LOG] Starting node helper for: newsfeed
[2024-05-03 16:04:58.288] [LOG] Sockets connected & modules started …
WARNING: v3dv is neither a complete nor a conformant Vulkan implementation. Testing use only.
[2024-05-03 16:04:58.891] [LOG] Launching application.
[2024-05-03 16:05:02.661] [LOG] Create new calendarfetcher for url: http://www.calendarlabs.com/ical-calendar/ics/39/Canada_Holidays.ics - Interval: 300000
[2024-05-03 16:05:02.668] [ERROR] Whoops! There was an uncaught exception…
[2024-05-03 16:05:02.677] [ERROR] ReferenceError: fetcher is not defined
at fetchCalendar (/home/pi/MagicMirror/modules/MMM-MyCalendar/calendarfetcher.js:65:3)
at CalendarFetcher.startFetch (/home/pi/MagicMirror/modules/MMM-MyCalendar/calendarfetcher.js:110:3)
at Class.createFetcher (/home/pi/MagicMirror/modules/MMM-MyCalendar/node_helper.js:73:11)
at Class.socketNotificationReceived (/home/pi/MagicMirror/modules/MMM-MyCalendar/node_helper.js:21:9)
at Socket. (/home/pi/MagicMirror/js/node_helper.js:98:11)
at Socket.emit (node:events:514:28)
at Socket.emitUntyped (/home/pi/MagicMirror/node_modules/socket.io/dist/typed-events.js:69:22)
at /home/pi/MagicMirror/node_modules/socket.io/dist/socket.js:704:39
at process.processTicksAndRejections (node:internal/process/task_queues:77:11)
[2024-05-03 16:05:02.680] [ERROR] MagicMirror² will not quit, but it might be a good idea to check why this happened. Maybe no internet connection?
[2024-05-03 16:05:02.684] [ERROR] If you think this really is an issue, please open an issue on GitHub: https://github.com/MagicMirrorOrg/MagicMirror/issues
[2024-05-03 16:05:02.686] [LOG] Create new calendarfetcher for url: https://calendar.google.com/calendar/ical/5u47rliikveghncls65jrsotkc%40group.calendar.google.com/private-7c6a117f2ae0d357b447c735373245a2/basic.ics - Interval: 300000
[2024-05-03 16:05:02.688] [ERROR] Whoops! There was an uncaught exception…
[2024-05-03 16:05:02.689] [ERROR] ReferenceError: fetcher is not defined
at fetchCalendar (/home/pi/MagicMirror/modules/MMM-MyCalendar/calendarfetcher.js:65:3)
at CalendarFetcher.startFetch (/home/pi/MagicMirror/modules/MMM-MyCalendar/calendarfetcher.js:110:3)
at Class.createFetcher (/home/pi/MagicMirror/modules/MMM-MyCalendar/node_helper.js:73:11)
at Class.socketNotificationReceived (/home/pi/MagicMirror/modules/MMM-MyCalendar/node_helper.js:21:9)
at Socket. (/home/pi/MagicMirror/js/node_helper.js:98:11)
at Socket.emit (node:events:514:28)
at Socket.emitUntyped (/home/pi/MagicMirror/node_modules/socket.io/dist/typed-events.js:69:22)
at /home/pi/MagicMirror/node_modules/socket.io/dist/socket.js:704:39
at process.processTicksAndRejections (node:internal/process/task_queues:77:11)
[2024-05-03 16:05:02.690] [ERROR] MagicMirror² will not quit, but it might be a good idea to check why this happened. Maybe no internet connection?
[2024-05-03 16:05:02.690] [ERROR] If you think this really is an issue, please open an issue on GitHub: https://github.com/MagicMirrorOrg/MagicMirror/issues
[2024-05-03 16:05:02.790] [LOG] Create new newsfetcher for url: https://rss.cbc.ca/lineup/canada.xml - Interval: 300000
[2024-05-03 16:05:03.039] [LOG] Create new newsfetcher for url: https://rss.cbc.ca/lineup/canada-toronto.xml - Interval: 300000
[2024-05-03 16:05:03.052] [LOG] Create new newsfetcher for url: https://rss.cbc.ca/lineup/sports-nhl.xml - Interval: 300000
[2024-05-03 16:05:03.071] [LOG] [WEATHER] MMM-WEATHER Version: 1.0.6
[2024-05-03 16:05:03.112] [LOG] [MMM-Pir] Version: 1.5.1 rev: 240402
[2024-05-03 16:05:03.114] [LOG] [MMM-Pir] [LIB] [PIR] Mode 0 Selected (onoff library)
[2024-05-03 16:05:03.168] [LOG] [MMM-Pir] [LIB] [PIR] Started!
[2024-05-03 16:05:03.172] [LOG] [MMM-Pir] [LIB] [SCREEN] Mode 4: HDMI CEC
[2024-05-03 16:05:03.228] [LOG] [MMM-Pir] Started!
[2024-05-03 16:05:03.231] [INFO] updatenotification: Updater Class Loaded!
[2024-05-03 16:05:03.233] [INFO] updatenotification: Checking PM2 using…
[2024-05-03 16:05:03.239] [INFO] Checking git for module: MMM-MyCalendar
[2024-05-03 16:05:03.375] [INFO] Checking git for module: calendar_monthly
[2024-05-03 16:05:03.478] [INFO] System information:

SYSTEM: manufacturer: Raspberry Pi Foundation; model: Raspberry Pi 4 Model B Rev 1.4; raspberry: [object Object]; virtual: false

OS: platform: linux; distro: Raspbian GNU/Linux; release: 11; arch: arm; kernel: 5.10.103-v7l+

VERSIONS: electron: 29.1.6; used node: 20.9.0; installed node: 20.4.0; npm: 9.8.1; pm2: 5.3.1

OTHER: timeZone: America/Toronto; ELECTRON_ENABLE_GPU: undefined

[2024-05-03 16:05:03.529] [INFO] Checking git for module: MMM-Pir
[2024-05-03 16:05:03.687] [INFO] updatenotification: [PM2] You are not using pm2
[2024-05-03 16:05:04.116] [INFO] Checking git for module: MMM-Weather
[2024-05-03 16:05:04.566] [INFO] Checking git for module: MMM-Tools
[2024-05-03 16:05:04.708] [INFO] Newsfeed-Fetcher: Broadcasting 18 items.
[2024-05-03 16:05:04.809] [INFO] Checking git for module: MagicMirror
[2024-05-03 16:05:04.861] [INFO] Newsfeed-Fetcher: Broadcasting 20 items.
[2024-05-03 16:05:04.874] [INFO] Newsfeed-Fetcher: Broadcasting 19 items.
[2024-05-03 16:05:14.810] [LOG] Shutting down server…
[2024-05-03 16:05:14.812] [LOG] Stopping module helper: updatenotification
[2024-05-03 16:05:14.813] [LOG] Stopping module helper: MMM-MyCalendar
[2024-05-03 16:05:14.813] [LOG] Stopping module helper: MMM-Pir
[2024-05-03 16:05:14.814] [LOG] Stopping module helper: MMM-Weather
[2024-05-03 16:05:14.814] [LOG] Stopping module helper: MMM-Tools
[2024-05-03 16:05:14.815] [LOG] Stopping module helper: newsfeed
[2024-05-03 16:05:14.816] [LOG] Node_helpers stopped …
[2024-05-03 16:05:14.891] [LOG] [MMM-Pir] [LIB] [SCREEN] See you soon !
[2024-05-03 16:05:14.893] [LOG] [MMM-Pir] [LIB] [SCREEN] @bugsounet

so, look at the messages where you start MM

if pm2, then

pm2 logs --lines=xxx
where xxx is some number, default 15
you might need 100

always best when adding/changing NOT to use pm2

pm2 stop all
cd ~/MagicMirror
npm start 

then u can see the messages immediately

when u get it all working then
pm2 status
and then pm2 start x
where x is the name or number on the row of the managed app you want to start

pm2 --help will show you all the command options
this is a typical scenario for all linux command line commands --help shows the help
and most times
man command_name
will show you the user manual
q, quits the manual display

I read that post already, which allowed me to get the MM running again. I just commented out the lines indicated.

also see this issue for the module
https://github.com/jclarke0000/MMM-MyCalendar/issues/40