<![CDATA[ReferenceError: fetch is not defined]]>Could not find anything helpfull on the web, of this forum so here goes.

MM was running fine until latest update. Weather stopped working.,
Fixed it by using the sample settings, they changed from openweather to openmeto. ok, no prob.

But now, dont ask, calender and newsfeed keep loading.
I tried;

  • git pull in Magic mirror folder
  • ran npm install node-fetch@2 in Magic mirror and calender module folder
  • ran sdetweil repair script (
  • updated Pi3, running bookwork

the log shows this
0|mm | [2024-10-18 14:59:19.435] [ERROR] Whoops! There was an uncaught exception…
0|mm | [2024-10-18 14:59:19.448] [ERROR] ReferenceError: fetch is not defined
0|mm | at fetchCalendar (/home/pi/MagicMirror/modules/default/calendar/calendarfetcher.js:51:3)
0|mm | at CalendarFetcher.startFetch (/home/pi/MagicMirror/modules/default/calendar/calendarfetcher.js:96:3)
0|mm | at Class.createFetcher (/home/pi/MagicMirror/modules/default/calendar/node_helper.js:79:11)
0|mm | at Class.socketNotificationReceived (/home/pi/MagicMirror/modules/default/calendar/node_helper.js:15:9)
0|mm | at Socket. (/home/pi/MagicMirror/js/node_helper.js:91:10)
0|mm | at Socket.onevent (/home/pi/MagicMirror/node_modules/socket.io/dist/socket.js:462:26)
0|mm | at Socket._onpacket (/home/pi/MagicMirror/node_modules/socket.io/dist/socket.js:430:22)
0|mm | at /home/pi/MagicMirror/node_modules/socket.io/dist/client.js:214:24
0|mm | at process.processTicksAndRejections (node:internal/process/task_queues:78:11)

Strange, but have Hyper-v debian running with MM and no problem there

Anyone?

]]>https://forum.magicmirror.builders/topic/19056/referenceerror-fetch-is-not-definedRSS for NodeThu, 14 May 2026 21:54:01 GMTFri, 18 Oct 2024 13:09:10 GMT60<![CDATA[Reply to ReferenceError: fetch is not defined on Sun, 20 Oct 2024 16:15:33 GMT]]>@ReD1470 awesome. glad it’s working

]]>https://forum.magicmirror.builders/post/120691https://forum.magicmirror.builders/post/120691Sun, 20 Oct 2024 16:15:33 GMT<![CDATA[Reply to ReferenceError: fetch is not defined on Sun, 20 Oct 2024 15:56:36 GMT]]>@sdetweil

WOW that did alot… i think
but you sure now your stuf… problem fixed. I got my calender back
TNX!

here are the last lines of the log
----------------------------------
npm WARN deprecated har-validator@5.1.5: this library is no longer supported
npm WARN deprecated uuid@3.4.0: Please upgrade to version 7 or higher. Older versions may use Math.random() in certain circumstances, which is known to be problematic. See https://v8.dev/blog/math-random for details.
npm WARN deprecated request@2.88.2: request has been deprecated, see https://github.com/request/request/issues/3142

added 48 packages, and audited 49 packages in 8s

2 packages are looking for funding
run npm fund for details

2 moderate severity vulnerabilities

Some issues need review, and may require choosing
a different dependency.

Run npm audit for details.

processing complete for module MMM-SystemStats

restoring custom.css
removing git alias
Upgrade ended - Sun Oct 20 17:53:11 CEST 2024

]]>https://forum.magicmirror.builders/post/120690https://forum.magicmirror.builders/post/120690Sun, 20 Oct 2024 15:56:36 GMT<![CDATA[Reply to ReferenceError: fetch is not defined on Sun, 20 Oct 2024 15:41:05 GMT]]>@ReD1470 note… IF you tried to do it manually, my script will abort if you try to auto upgrade again…
(I will not install updates over already updated)

so you have to change apply to force, to FORCE the scrip to do it anyhow

don’t need the whole upgrade log just the last 20 lines

]]>https://forum.magicmirror.builders/post/120689https://forum.magicmirror.builders/post/120689Sun, 20 Oct 2024 15:41:05 GMT<![CDATA[Reply to ReferenceError: fetch is not defined on Sun, 20 Oct 2024 15:34:58 GMT]]>@sdetweil

Yes node -v
v20.9.0

Yes the install script was applied with apply
bash -c “$(curl -sL https://raw.githubusercontent.com/sdetweil/MagicMirror_scripts/master/upgrade-script.sh)” apply

If you want i can try and zip and post the upgrade.log

]]>https://forum.magicmirror.builders/post/120688https://forum.magicmirror.builders/post/120688Sun, 20 Oct 2024 15:34:58 GMT<![CDATA[Reply to ReferenceError: fetch is not defined on Fri, 18 Oct 2024 13:34:17 GMT]]>@ReD1470 what nodejs version are you running?

node -v

you need 20.9.0 or above, but not any v 21

the npm install should fail on v 2.29.0 as it checks the version too

my upgrade script is 2 part right?
without any parameters its it just a test, no changes
with a parameter it will DO the upgrade, nodejs too

]]>https://forum.magicmirror.builders/post/120648https://forum.magicmirror.builders/post/120648Fri, 18 Oct 2024 13:34:17 GMT