nom start error

[ashitajain666]

angular-material-dashboard@1.3.0 start /Users/ashitajain/Desktop/angular-material-dashboard-master
node your-script.js

module.js:544
throw err;
^

Error: Cannot find module '/Users/ashitajain/Desktop/angular-material-dashboard-master/your-script.js'
at Function.Module._resolveFilename (module.js:542:15)
at Function.Module._load (module.js:472:25)
at Function.Module.runMain (module.js:682:10)
at startup (bootstrap_node.js:191:16)
at bootstrap_node.js:613:3
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! angular-material-dashboard@1.3.0 start: node your-script.js
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the angular-material-dashboard@1.3.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR! /Users/ashitajain/.npm/_logs/2017-11-23T08_38_40_692Z-debug.log
Ashitas-MacBook-Air:angular-material-dashboard-master ashitajain$ npm start

angular-material-dashboard@1.3.0 start /Users/ashitajain/Desktop/angular-material-dashboard-master
webpack-dev-server --hot

sh: webpack-dev-server: command not found
npm ERR! file sh
npm ERR! code ELIFECYCLE
npm ERR! errno ENOENT
npm ERR! syscall spawn
npm ERR! angular-material-dashboard@1.3.0 start: webpack-dev-server --hot
npm ERR! spawn ENOENT
npm ERR!
npm ERR! Failed at the angular-material-dashboard@1.3.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR! /Users/ashitajain/.npm/_logs/2017-11-23T08_39_39_371Z-debug.log
Ashitas-MacBook-Air:angular-material-dashboard-master ashitajain$