@sdetweil Thank you immensely for you help. It is running now.

@sdetweil
Looks like I ran npm install on modules dir.

pi@MagicMirror2:~/MagicMirror/modules $ git clone https://github.com/Elaniobro/MMM-nyc-transit.git
Cloning into 'MMM-nyc-transit'...
remote: Enumerating objects: 67, done.
remote: Counting objects: 100% (67/67), done.
remote: Compressing objects: 100% (58/58), done.
remote: Total 176 (delta 34), reused 19 (delta 7), pack-reused 109
Receiving objects: 100% (176/176), 559.15 KiB | 649.00 KiB/s, done.
Resolving deltas: 100% (93/93), done.
pi@MagicMirror2:~/MagicMirror/modules $ npm install

I will correct as you noted.

@sdetweil said in MMM-NYC-Transit Module (Black Screen):

npm start

Looks like some files might be missing.
Here is a dump of messages:

[2020-05-22 20:49:37.148] [ERROR]  App threw an error during load
[2020-05-22 20:49:37.150] [ERROR]  Error: Cannot find module 'mta-realtime-subway-departures'
Require stack:
- /home/pi/MagicMirror/modules/MMM-nyc-transit/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
- 
    at Module._resolveFilename (internal/modules/cjs/loader.js:627:15)
    at Function.Module._resolveFilename (/home/pi/MagicMirror/node_modules/electron/dist/resources/electron.asar/common/reset-search-paths.js:41:16)
    at Function.Module._resolveFilename (/home/pi/MagicMirror/node_modules/module-alias/index.js:49:29)
    at Function.Module._load (internal/modules/cjs/loader.js:531:27)
    at Module.require (internal/modules/cjs/loader.js:685:19)
    at require (internal/modules/cjs/helpers.js:16:16)
    at Object.<anonymous> (/home/pi/MagicMirror/modules/MMM-nyc-transit/node_helper.js:8:24)
    at Module._compile (internal/modules/cjs/loader.js:786:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:798:10)
    at Module.load (internal/modules/cjs/loader.js:645:32)
[2020-05-22 20:49:37.155] [LOG]    Whoops! There was an uncaught exception...
[2020-05-22 20:49:37.158] [ERROR]  Error: Cannot find module 'mta-realtime-subway-departures'
Require stack:
- /home/pi/MagicMirror/modules/MMM-nyc-transit/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
- 
    at Module._resolveFilename (internal/modules/cjs/loader.js:627:15)
    at Function.Module._resolveFilename (/home/pi/MagicMirror/node_modules/electron/dist/resources/electron.asar/common/reset-search-paths.js:41:16)
    at Function.Module._resolveFilename (/home/pi/MagicMirror/node_modules/module-alias/index.js:49:29)
    at Function.Module._load (internal/modules/cjs/loader.js:531:27)
    at Module.require (internal/modules/cjs/loader.js:685:19)
    at require (internal/modules/cjs/helpers.js:16:16)
    at Object.<anonymous> (/home/pi/MagicMirror/modules/MMM-nyc-transit/node_helper.js:8:24)
    at Module._compile (internal/modules/cjs/loader.js:786:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:798:10)
    at Module.load (internal/modules/cjs/loader.js:645:32) {
  code: 'MODULE_NOT_FOUND',
  requireStack: [
    '/home/pi/MagicMirror/modules/MMM-nyc-transit/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',
    undefined
  ]
}
[2020-05-22 20:49:37.173] [LOG]    MagicMirror will not quit, but it might be a good idea to check why this happened. Maybe no internet connection?
[2020-05-22 20:49:37.175] [LOG]    If you think this really is an issue, please open an issue on GitHub: https://github.com/MichMich/MagicMirror/issues
[2020-05-22 20:49:37.336] [LOG]    Launching application.

I did clone the repo as required??

@sdetweil I use pm2

@sdetweil Yeah that was my bad… the mirror loads now without the module…
:man_facepalming_medium-dark_skin_tone:

@sdetweil pm2

After adding disabled: true

Got "Please create a config file " error

@sdetweil Aww OK will adjust

@sdetweil I figured thats why I said it was weird.

This is what the module looked like in my config

  {
              module: 'MMM-nyc-transit',
              disabled: "true",
              position: "bottom_right",
              header: "Next Train",
              config: {
                     apiKey: '9b76b0b756f7f9a76d4fe883075c00cf',
                                displayType: 'list',
                                mtaType: 'train',
                                stations: [
                                        {
                                        stationId: 95,
                                        walkingTime: 5,
                                        dir: {
                                                upTown: false,
                                                downTown: true
                                             }
                                        },
                                        {
                                        stationId: 95,
                                        walkingTime: 5,
                                        dir: {
                                                upTown: true,
                                                downTown: false
                                             }
                                        }
                                        ],
                                updateInterval: 300000
                }
                },

These are the steps I just tried…
recreated original circumstances that caused black screen (added Module to config) and yes the black screen still exist.

I assume that means there is issue with module config settings.

I tried to launch the Dev console, but it did not launch in same page as black mirror screen but a white page.

I will wait for your response before making changes to config.js file again.

@sdetweil I added the module to config, disabled!
The Mirror loads as normal.
Something I find weird is even with the module disabled, its header is still shown.
https://share.icloud.com/photos/09o6PENxnrT-_fTLvp8JN2mhw

I realized I have since removed the config. I will re-add and check again.