vue+webpack 但是npm start運行報這個錯誤，大家知道這是什么意思嗎？

my-first-vue-project@1.0.0 dev E:vuemy-first-vue-project
webpack-dev-server --inline --progress --config build/webpack.dev.conf.js

module.js:538

throw err;
^

Error: Cannot find module 'balanced-match'

at Function.Module._resolveFilename (module.js:536:15)
at Function.Module._load (module.js:466:25)
at Module.require (module.js:579:17)
at require (internal/module.js:11:18)
at Object.<anonymous> (E:\vue\my-first-vue-project\node_modules\brace-expansion\index.js:2:16)
at Module._compile (module.js:635:30)
at Object.Module._extensions..js (module.js:646:10)
at Module.load (module.js:554:32)
at tryModuleLoad (module.js:497:12)
at Function.Module._load (module.js:489:3)

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! my-first-vue-project@1.0.0 dev: webpack-dev-server --inline --progress --config build/webpack.dev.conf.js
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the my-first-vue-project@1.0.0 dev 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! C:UsersAdministratorAppDataRoamingnpm-cache_logs2018-03-27T01_17_53_319Z-debug.log
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! my-first-vue-project@1.0.0 start: npm run dev
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the my-first-vue-project@1.0.0 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! C:UsersAdministratorAppDataRoamingnpm-cache_logs2018-03-27T01_17_53_369Z-debug.log