module not found error loading module in MagicMirror

sdetweil

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

The “strange” referred to the fact that I have no problems with MMM-DWD-WarnWeather, but others have to install the module “request”.

did u npm install request in the mm folder, or in a module folder where there was no package.json, the latter ends up putting it in the mm/node_modules, the same as the former

mumblebaj

Maybe this can help some users.

The following will search all *.js files in the modules folder for the reference of request. You can then just enter the module folders and install as per @sdetweil suggestion above. The same can be done for the other missing modules.

grep -r -E '('request')' ~/MagicMirror/modules/*/*.js

or search for multiple problem modules

grep -r -E '('request') | ('valid-url')' ~/MagicMirror/modules/*/*.js

Produces the following:

sdetweil

@mumblebaj and then pull off the module name and scan it’s package.json to see if it’s referenced

MacG

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

did u npm install request in the mm folder, or in a module folder where there was no package.json, the latter ends up putting it in the mm/node_modules, the same as the former

I installed it the way you suggested. In the two module folders with the addition of package.json (npm init -y) and then npm install request. The MMM-DWD-WarnWeather worked on my mirror from the beginning after updating to MM2.17.

sdetweil

I enhanced my upgrade script to do all this for all installed modules…

levon

@sdetweil @mumblebaj Thank you two for helping me solve this problem after the last update - I spent a LOT of time looking for the solution that you two helped me (the grep made it easier to find the right modules), the two commands were what fixed it.

Will I have to do this again with the next update?

sdetweil

@levon maybe. but if you use my upgrade script, it will do the fixes for you

see
https://github.com/sdetweil/MagicMirror_scripts

levon

@sdetweil Thanks … I will give this a try next time I’m updating. I thought I had tried it before, but perhaps not. I appreciate you sharing this.

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?