npm run dev 出错了

[ChunhuiLiu]

webpack-dev-server --inline --progress --config build/webpack.dev.conf.js

internal/modules/cjs/loader.js:638
throw err;
^

Error: Cannot find module 'find-up'
at Function.Module._resolveFilename (internal/modules/cjs/loader.js:636:15)
at Function.Module._load (internal/modules/cjs/loader.js:562:25)
at Module.require (internal/modules/cjs/loader.js:692:17)
at require (internal/modules/cjs/helpers.js:25:18)
at Object. (D:\github\temp\VFD\node_modules_pkg-dir@2.0.0@pkg-dir\index.js:3:16)
at Module._compile (internal/modules/cjs/loader.js:778:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
at Module.load (internal/modules/cjs/loader.js:653:32)
at tryModuleLoad (internal/modules/cjs/loader.js:593:12)
at Function.Module._load (internal/modules/cjs/loader.js:585:3)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! vfd@1.0.5 dev: webpack-dev-server --inline --progress --config build/webpack.dev.conf.js
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the vfd@1.0.5 dev script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.