MMM-Button white screen

[FlorianRD]

He guys. Another error log after raspberry startup. Maybe helps?

pi@raspberrypi:~ $ npm start dev
npm ERR! Linux 4.4.26-v7+
npm ERR! argv "/usr/bin/nodejs" "/usr/bin/npm" "start" "dev"
npm ERR! node v6.9.1
npm ERR! npm  v3.10.8
npm ERR! path /home/pi/package.json
npm ERR! code ENOENT
npm ERR! errno -2
npm ERR! syscall open

npm ERR! enoent ENOENT: no such file or directory, open '/home/pi/package.json'
npm ERR! enoent ENOENT: no such file or directory, open '/home/pi/package.json'
npm ERR! enoent This is most likely not a problem with npm itself
npm ERR! enoent and is related to npm not being able to find a file.
npm ERR! enoent

npm ERR! Please include the following file with any support request:
npm ERR!     /home/pi/npm-debug.log

[yawns]

@FlorianRD
you are in the wrong directory.

cd MagicMirror
npm start dev

[FlorianRD]

Okay, next try…

npm ERR! Linux 4.4.26-v7+
npm ERR! argv "/usr/bin/nodejs" "/usr/bin/npm" "start" "dev"
npm ERR! node v7.4.0
npm ERR! npm  v4.0.5
npm ERR! code ELIFECYCLE
npm ERR! magicmirror@2.0.0 start: `electron js/electron.js "dev"`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the magicmirror@2.0.0 start script 'electron js/electron.js "dev"'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the magicmirror package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     electron js/electron.js "dev"
npm ERR! You can get information on how to open an issue for this project with:
npm ERR!     npm bugs magicmirror
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!     npm owner ls magicmirror
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /home/pi/MagicMirror/npm-debug.log