fix for black screen in 2.16 and later

Arena

@sdetweil I did everything as you said, but …

[17.12.2021 04:05.03.723] [ERROR] WARNING! Could not load config file. Starting with default configuration. Error found: Error: Cannot find module ‘request’
Require stack:

/home/pi/MagicMirror/modules/MMM-bitcoin/node_helper.js
/home/pi/MagicMirror/js/app.js
/home/pi/MagicMirror/js/electron.js
/home/pi/MagicMirror/node_modules/electron/dist/resources/default_app.asar/main.js

sdetweil

@arena and , what is the module/library u need to install?

Arena

@sdetweil fiddled all day today and figured out
it turned out I did not install or update the dependencies inside the module

sorry, thanks

kusselin

@sdetweil Hello everyone, I haven’t been here for a while and my Magic Mirror was switched off…after I switched it on again I made updates to the modules via remote…but I still don’t have any display for some modules like Tankerkönig…when I start the Mirror it always says “Modules cannot be loaded”.

Now, as described by sdetweil, there are commands that you have to execute in the modules in question…but unfortunately I haven’t quite understood how I have to do this in the right order?

It would be really nice if you could explain to me how I have to proceed in order to display the modules again, such as Tankerkönig or mmm-fuel.

Thank you very much in advance for your help.

Greetings

Kussel

i don´t understand that here:

npm install ???

where ??? is the library noted in the message Cannot find module ‘???’

| in the example message above, ??? is request

to find this message, look in the output of npm start. or if you use pm2 to launch mm do
pm2 logs --lines=50

how do I proceed exactly?

pi@raspberrypi:~/MagicMirror/modules/MMM-Tankerkoenig $ npm init -y
Wrote to /home/pi/MagicMirror/modules/MMM-Tankerkoenig/package.json:

{
  "name": "MMM-Tankerkoenig",
  "version": "1.0.0",
  "description": "This is a module for the [MagicMirror²](https://github.com/MichMich/MagicMirror/) which displays a fuel prices from [Tankerkoenig](https://www.tankerkoenig.de/).",
  "main": "MMM-Tankerkoenig.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "repository": {
    "type": "git",
    "url": "git+https://github.com/terenc3/MMM-Tankerkoenig.git"
  },
  "keywords": [],
  "author": "",
  "license": "ISC",
  "bugs": {
    "url": "https://github.com/terenc3/MMM-Tankerkoenig/issues"
  },
  "homepage": "https://github.com/terenc3/MMM-Tankerkoenig#readme"

sdetweil

@kusselin find the messages output by mm

search the messages for one like shown (without the ???)

find the name of the library in quotes (now u have ???)

issue a command using that info

kusselin

@sdetweil thank you…it´s working now.

LMAC

I ran the command as recommended (request was my error as well). I now have this error and MM will not load:

A JavaScript error occurred in the main process
Uncaught Exception:
Error: Cannot find module ‘logger’
Require stack:

/home/pi/MagicMirror/js/app.js
/home/pi/MagicMirror/js/electron.js
/home/pi/MagicMirror/node_modules/electron/dist/resources/default_app.asar/main.js
at Module._resolveFilename (node:internal/modules/cjs/loader:940:15)
at Function.n._resolveFilename (node:electron/js2c/browser_init:249:1128)
at Function.Module._resolveFilename (/home/pi/MagicMirror/node_modules/module-alias/index.js:49:29)
at Module._load (node:internal/modules/cjs/loader:785:27)
at Function.c._load (node:electron/js2c/asar_bundle:5:13331)
at Module.require (node:internal/modules/cjs/loader:1012:19)
at require (node:internal/modules/cjs/helpers:94:18)
at Object. (/home/pi/MagicMirror/js/app.js:13:13)
at Module._compile (node:internal/modules/cjs/loader:1116:14)
at Object.Module._extensions…js (node:internal/modules/cjs/loader:1169:10)

sdetweil

@lmac well you ran it in the wrong place… oops

do this

cd ~/MagicMirror
rm -rf node_modules
rm package-lock.json
npm install

then for whatever module was causing problem

cd ~/MagicMirror/modules/modulename

do the same last 3 steps as above
AND THEN

npm install request --save

DarrenHill

Just wanted to say thanks for the fix here.

Did an update and hit exactly this with MMM-GmailFeed and the request module.

Installed it back (with an audit fix afterwards) and now all up and running again :)

sdetweil

@darrenhill said in fix for black screen in 2.16 and later:

with an audit fix afterwards

don’t do those… many times leave more trouble than they fix…
we can’t suppress the audit warning message