NPM start issues about dasher HOT 6 OPEN

pi@hassbian:~/dasher $ sudo npm run start

> [email protected] start /home/pi/dasher
> node app.js

module.js:434
  return process.dlopen(module, path._makeLong(filename));
                 ^

Error: Module version mismatch. Expected 46, got 57.
    at Error (native)
    at Object.Module._extensions..node (module.js:434:18)
    at Module.load (module.js:343:32)
    at Function.Module._load (module.js:300:12)
    at Module.require (module.js:353:17)
    at require (internal/module.js:12:17)
    at Object.<anonymous> (/home/pi/dasher/node_modules/node-dash-button/node_modules/pcap/pcap.js:3:21)
    at Module._compile (module.js:409:26)
    at Object.Module._extensions..js (module.js:416:10)
    at Module.load (module.js:343:32)

npm ERR! Linux 4.14.34-v7+
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "run" "start"
npm ERR! node v4.4.4
npm ERR! npm  v2.15.1
npm ERR! code ELIFECYCLE
npm ERR! [email protected] start: `node app.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the [email protected] start script 'node app.js'.
npm ERR! This is most likely a problem with the dasher package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node app.js
npm ERR! You can get information on how to open an issue for this project with:
npm ERR!     npm bugs dasher
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!
npm ERR!     npm owner ls dasher
npm ERR! There is likely additional logging output above.

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