pi@raspberrypi:~/MagicMirror$ npm start

> magicmirror@2.1.3 start /home/pi/MagicMirror
> sh run-start.sh

/home/pi/MagicMirror/node_modules/electron/index.js:9
  throw new Error('Electron failed to install correctly, please delete node_modules/electron and try installing again')
  ^

Error: Electron failed to install correctly, please delete node_modules/electron and try installing again
    at Object. (/home/pi/MagicMirror/node_modules/electron/index.js:9:9)
    at Module._compile (module.js:570:32)
    at Object.Module._extensions..js (module.js:579:10)
    at Module.load (module.js:487:32)
    at tryModuleLoad (module.js:446:12)
    at Function.Module._load (module.js:438:3)
    at Module.require (module.js:497:17)
    at require (internal/module.js:20:19)
    at Object. (/home/pi/MagicMirror/node_modules/electron/cli.js:3:16)
    at Module._compile (module.js:570:32)

npm ERR! Linux 4.9.41-v7+
npm ERR! argv "/usr/bin/node" "/usr/bin/npm" "start"
npm ERR! node v6.11.4
npm ERR! npm  v3.10.10
npm ERR! code ELIFECYCLE
npm ERR! magicmirror@2.1.3 start: `sh run-start.sh`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the magicmirror@2.1.3 start script 'sh run-start.sh'.
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!     sh run-start.sh
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

tks！