[ERROR] _ is not defined

nowayto

Hi,
I have an issue, appeared after MMM-SolarPicture installation but I don’t think it’s related to it. Maybe an error on my configuration.

pm2 logs is this one below

0|mm | [2025-05-08 21:00:29.772] [ERROR] _ is not defined
0|mm | [2025-05-08 21:00:29.826] [ERROR] _ is not defined
0|mm | [2025-05-08 21:01:53.233] [ERROR] _ is not defined
0|mm | [2025-05-08 21:01:53.327] [ERROR] _ is not defined
0|mm | [2025-05-08 21:03:16.264] [ERROR] _ is not defined
0|mm | [2025-05-08 21:03:16.440] [ERROR] _ is not defined
0|mm | [2025-05-08 21:04:39.584] [ERROR] _ is not defined
0|mm | [2025-05-08 21:04:39.676] [ERROR] _ is not defined
0|mm | sh: 1: ./node_modules/.bin/electron: not found
0|mm | sh: 1: ./node_modules/.bin/electron: not found
0|mm | sh: 1: sh: 1: ./node_modules/.bin/electron: not found
0|mm | ./node_modules/.bin/electron: not found
0|mm | sh: 1: ./node_modules/.bin/electron: not found
0|mm | sh: 1: ./node_modules/.bin/electron: not found
0|mm | sh: 1: ./node_modules/.bin/electron: not found

0|mm | > magicmirror@2.31.0-develop start
0|mm | > npm run start:x11
0|mm | > magicmirror@2.31.0-develop start:x11
0|mm | > DISPLAY=“${DISPLAY:=:0}” ./node_modules/.bin/electron js/electron.js
0|mm | sh: 1: ./node_modules/.bin/electron: not found
PM2 | App [mm:0] exited with code [0] via signal [SIGINT]
PM2 | App [mm:0] starting in -fork mode-
PM2 | App [mm:0] online
0|mm | > magicmirror@2.31.0-develop start
0|mm | > npm run start:x11
0|mm | > magicmirror@2.31.0-develop start:x11
0|mm | > DISPLAY=“${DISPLAY:=:0}” ./node_modules/.bin/electron js/electron.js
0|mm | sh: 1: ./node_modules/.bin/electron: not found
PM2 | App [mm:0] exited with code [0] via signal [SIGINT]
PM2 | App [mm:0] starting in -fork mode-
PM2 | App [mm:0] online

npm run config:check gave me that result:

magicmirror@2.31.0-develop config:check
node js/check_config.js

node:internal/modules/cjs/loader:1228
throw err;
^

Error: Cannot find module ‘eslint’
Require stack:

/home/MYMIRRORNAME/MagicMirror/js/check_config.js
at Module._resolveFilename (node:internal/modules/cjs/loader:1225:15)
at Module._load (node:internal/modules/cjs/loader:1051:27)
at Module.require (node:internal/modules/cjs/loader:1311:19)
at require (node:internal/modules/helpers:179:18)
at Object. (/home/MYMIRRNAME/MagicMirror/js/check_config.js:6:20)
at Module._compile (node:internal/modules/cjs/loader:1469:14)
at Module._extensions…js (node:internal/modules/cjs/loader:1548:10)
at Module.load (node:internal/modules/cjs/loader:1288:32)
at Module._load (node:internal/modules/cjs/loader:1104:12)
at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:173:12) {
code: ‘MODULE_NOT_FOUND’,
requireStack: [ ‘/home/MYMIRRORNAME/MagicMirror/js/check_config.js’ ]
}

Node.js v20.18.1

thank you for your help

nowayto

@sdetweil
Sam… I don’t know how to saying it.
I figure out the issue.

After your last message I tried what you suggest.
With the default cfg I had no errors, with mine I had errors.

So I checked again and again the config…
and I find an underscore _ right at the start of the config

npm config:check told me “no syntax errors” and that confusing me.

When I edit it I use nano editor
I do “sudo nano config.js” and I press CTRL + _ to jump at the 250 line.
Might be one of the latest time I opened it and press _ a bit faster than CTRL and I add it for error.

In addition I notice that when I open config.js with nano editor the green cursor is, clearly, at the start of the first line… EXACTLY on the undescore _ and it hides it.

I’m really sorry for bothering you with that.
How can I buy you a coffee ?
Thanks

sdetweil

@nowayto >Node.js v20.18.1

2.31.0 requires node 22.14 or above

how did you get here?

also you are on 2.31.0-develop

so you had a temp fix
and didn’t read the post i put out

https://forum.magicmirror.builders/topic/19561/version-2.31.0-april-1-2025-upgrade-reminder

nowayto

@sdetweil I didn’t update MM since I’ve installed it months ago, so I suppose it wasn’t that. Might be it updated automatically?

I remember you told me to use a “temp fix” to solve a problem.
Now I’ll follow your guide in the post to update it.
Thanks

nowayto

@sdetweil Do you suggest to update manually or auto? Thanks

sdetweil

@nowayto i never suggest update automatically.
use my script

nowayto

@sdetweil I’m sorry for the question: that script?

bash -c “$(curl -sL https://raw.githubusercontent.com/sdetweil/MagicMirror_scripts/master/upgrade-script.sh)”

Thanks

sdetweil

@nowayto yes, but its two steps

one time without any parameters (test mode)
and one time with apply

all you have to do is click/copy the first time and run it
then do the same on the second if the first ends successfully

nowayto

@sdetweil MM doesn’t work.

I tried a config check but I have this error now.
I tried to “npm install eslint -g” but the error persist

npm run config:check

magicmirror@2.31.0 config:check
node js/check_config.js

node:internal/modules/cjs/loader:1404
throw err;
^

Error: Cannot find module ‘eslint’
Require stack:

/home/MYMIRR/MagicMirror/js/check_config.js
at Module._resolveFilename (node:internal/modules/cjs/loader:1401:15)
at defaultResolveImpl (node:internal/modules/cjs/loader:1057:19)
at resolveForCJSWithHooks (node:internal/modules/cjs/loader:1062:22)
at Module._load (node:internal/modules/cjs/loader:1211:37)
at TracingChannel.traceSync (node:diagnostics_channel:322:14)
at wrapModuleLoad (node:internal/modules/cjs/loader:235:24)
at Module.require (node:internal/modules/cjs/loader:1487:12)
at require (node:internal/modules/helpers:135:16)
at Object. (/home/MYMIRR/MagicMirror/js/check_config.js:6:20)
at Module._compile (node:internal/modules/cjs/loader:1730:14) {
code: ‘MODULE_NOT_FOUND’,
requireStack: [ ‘/home/MYMIRR/MagicMirror/js/check_config.js’ ]
}

Node.js v22.15.0

sdetweil

@nowayto show me the ~/MagicMirror/installers/upgrade.log

note: I had a typo in log filename

and then do

cd ~/MagicMirror
npm install

nowayto

@sdetweil

Upgrade started - Sat May 10 00:06:51 CEST 2025
system is Linux magicmirror2 6.1.21-v7+ #1642 SMP Mon Apr 3 17:20:52 BST 2023 armv7l GNU/Linux
doing test run = true, NO updates will be applied!
the os is PRETTY_NAME=“Raspbian GNU/Linux 11 (bullseye)” NAME=“Raspbian GNU/Linux” VERSION_ID=“11” VERSION=“11 (bullseye)” VERSION_CODENAME=bullseye ID=raspbian ID_LIK>
architecture from dpkg is armhf
^[[96mCheck current Node installation …^[[0m
^[[0mNode currently installed. Checking version number.
^[[0mMinimum Node version: ^[[1mv22.14.0^[[0m
^[[0mInstalled Node version: ^[[1mv22.15.0^[[0m
^[[92mNo Node.js upgrade necessary.^[[0m
^[[96mCheck current NPM installation …^[[0m
^[[0mNPM currently installed. Checking version number.
^[[0mMinimum npm version: ^[[1mV10.9.2^[[0m
^[[0mInstalled npm version: ^[[1mV11.3.0^[[0m
^[[92mNo npm upgrade necessary.^[[0m

saving custom.css
remote name = origin
upgrading from version 2.31.0 to 2.31.0
fetching latest revisions
git fetch rc=0
current branch = master
On branch master
Your branch is up to date with ‘origin/master’.

Untracked files:
(use “git add …” to include in what will be committed)
core
errorcal.txt
errorcal2.txt
errorcal3.txt
errorcal4.txt
errorcal5.txt
nohup.out
run-start.sh
splashscreen/

nothing added to commit but untracked files present (use “git add” to track)
no files different from github version

nowayto

@sdetweil npm install results

~/MagicMirror $ npm install
npm error code ENOTEMPTY
npm error syscall rename
npm error path /home/MYMIRR/MagicMirror/node_modules/es-abstract
npm error dest /home/MYMIRR/MagicMirror/node_modules/.es-abstract-fSsKyNTi
npm error errno -39
npm error ENOTEMPTY: directory not empty, rename ‘/home/MYMIRR/MagicMirror/node_modules/es-abstract’ -> ‘/home/MYMIRR/MagicMirror/node_modules/.es-abstract-fSsKyNTi’
npm error A complete log of this run can be found in: /home/MYMIRR/.npm/_logs/2025-05-10T06_40_55_661Z-debug-0.log

Tried with sudo

~/MagicMirror $ sudo npm install
npm error code EBADENGINE
npm error engine Unsupported engine
npm error engine Not compatible with your version of node/npm: magicmirror@2.31.0
npm error notsup Not compatible with your version of node/npm: magicmirror@2.31.0
npm error notsup Required: {“node”:“>=22.14.0”}
npm error notsup Actual: {“npm”:“11.2.0”,“node”:“v20.18.1”}
npm error A complete log of this run can be found in: /root/.npm/_logs/2025-05-10T06_41_52_949Z-debug-0.log

npm seems to see an old version of nodejs but:

~/MagicMirror $ node -v
v22.15.0

I don’t know what happened.
If it can help I had first problem after the MMM-SolarPicture
but I’ve just installed it and configured it through config.js… nothing more than usual…

but the actual behaviour is that pm2 status says it’s running, but on the monitor I see just the raspbian desktop

│ id │ name │ namespace │ version │ mode │ pid │ uptime │ ↺ │ status │ cpu │ mem │ user │ watching │
├────┼───────┼─────────────┼─────────┼─────────┼──────────┼────────┼──────┼───────────┼──────────┼──────────┼──────────┼──────────┤
│ 0 │ mm │ default │ N/A │ fork │ 4311 │ 19s │ 64 │ online │ 0% │ 2.6mb │ ber… │ disabled │

sdetweil

@nowayto two things

doing test run = true, NO updates will be applied!
upgrading from version 2.31.0 to 2.31.0

doing test run changes nothing, its a safety check

and i wont let you upgrade over the same release accidentally

so you need to rerun the command and add

force

to the end

sdetweil

@nowayto NEVER use sudo with any npm command

the number in the pm2 status 4311 is the number of restarts

youve got a mess

now we HAVE to use sudo to undo it

cd ~/MagicMirror 
sudo rm -rf node_modules
cd fonts
sudo rm -rf node_modules
cd ..\vendor
sudo rm-rf node_modules
cd ..

lets see about node

which node
n 
q to quit
nvm

dont do anything else til we figure out the nodejs problem

nowayto

@sdetweil I’m sorry :(

I did it what you suggest and config:check gave me a module error again. Different than one before

npm run config:check

magicmirror@2.31.0 config:check
node js/check_config.js

node:internal/modules/cjs/loader:1404
throw err;
^

Error: Cannot find module ‘ajv’
Require stack:

After “require stack” there are other lines, if you need it, tell me.
Thanks

sdetweil

@nowayto

i said stop

we need to fix nodejs so npm install will work

node -v

says something
and npm install says node is different

i am trying to figure out where node is installed and by who
system, nvm or n

you didn’t give me answers to the commands i provided

nowayto

@sdetweil

which node gave me
/home/MYMIRR/.nvm/versions/node/v22.15.0/bin/node

n gave me
node/20.18.1

Use up/down arrow keys to select a version, return key to install, d to delete, q to quit

nvm gave me

Node Version Manager (v0.39.5)

Note: refers to any version-like string nvm understands. This includes :

full or partial version numbers, starting with an optional “v” (0.10, v0.1.2 , v1)
default (built-in) aliases: node, stable, unstable, iojs, system
custom aliases you define with nvm alias foo

followed by a lot of options

sdetweil

@nowayto ok nvm and n do the same function but differently

i use n in my scripts because it runs everywhere

so lets turn off nvm

nvm deactivate
nvm unload
cd ~
rm -rf  .nvm

now which node
should find /usr/local/bin/node

now we need n to get to node 22.14.0

sudo n 22.14.0

now node -v

should return 22.14.0

if so, do

cd  ~/MagicMirror 
npm install

now MagicMirror should run

nowayto

@sdetweil Thank you a lot Sam.

I did everything but
I have an [ERROR] _ is not defined

magicmirror@2.31.0 start:x11
DISPLAY=“${DISPLAY:=:0}” ./node_modules/.bin/electron js/electron.js

[2025-05-11 15:39:26.429] [LOG] Starting MagicMirror: v2.31.0
[2025-05-11 15:39:26.527] [LOG] Loading config …
[2025-05-11 15:39:26.537] [LOG] config template file not exists, no envsubst
[2025-05-11 15:39:28.154] [INFO] Checking config file /home/MYMIRR/MagicM irror/config/config.js …
[2025-05-11 15:39:28.478] [INFO] Your configuration file doesn’t contain syntax errors :)
[2025-05-11 15:39:28.482] [INFO] Checking modules structure configuration …
[2025-05-11 15:39:28.793] [ERROR] _ is not defined

sdetweil

@nowayto so that sounds like the npm install failed again

do it again and show the output

nowayto

@sdetweil

installer didn’t failed, but this is the result now

npm install

magicmirror@2.31.0 postinstall
npm run install-vendor && npm run install-fonts && echo "MagicMirror² installation finished successfully!
"

magicmirror@2.31.0 install-vendor
echo "Installing vendor files …
" && cd vendor && npm install --loglevel=error --no-audit --no-fund --no-update-notifier

Installing vendor files …

up to date in 7s

magicmirror@2.31.0 install-fonts
echo "Installing fonts …
" && cd fonts && npm install --loglevel=error --no-audit --no-fund --no-update-notifier

Installing fonts …

up to date in 3s
MagicMirror² installation finished successfully!

magicmirror@2.31.0 prepare
[ -f node_modules/.bin/husky ] && husky || echo no husky installed.

up to date in 45s

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