[1205] yarn.lock file (module version problem)

1.use "vue init nuxt/koa <projectname>" to Create Project 2.cd <projectname> 3.yarn install 4.npm run build

wangdandeMacBook-Pro:ckmongo wangdan$ npm run build
> ckmongo@1.0.0 build /Users/wangdan/Desktop/WorkSpace/ckmongo
> nuxt build && backpack build

  nuxt:build Building... +0ms
  nuxt:build App root: /Users/wangdan/Desktop/WorkSpace/ckmongo +11ms
  nuxt:build Generating /Users/wangdan/Desktop/WorkSpace/ckmongo/.nuxt files... +0ms
  nuxt:build Generating files... +5ms
  nuxt:build Generating routes... +6ms
  nuxt:build Building files... +20ms
  build [==================  ] 91%Hash: cfd88f0ee17dfa758bc3
Version: webpack 3.4.1
Time: 6741ms
             Asset    Size  Chunks             Chunk Names
server-bundle.json  216 kB          [emitted]

ERROR in ./node_modules/babel-loader/lib?{"presets":["vue-app"],"babelrc":false,"cacheDirectory":false}!./node_modules/vue-loader/lib/selector.js?type=script&index=0!./layouts/default.vue
Module not found: Error: Can't resolve '~components/Footer.vue' in '/Users/wangdan/Desktop/WorkSpace/ckmongo/layouts'
 @ ./node_modules/babel-loader/lib?{"presets":["vue-app"],"babelrc":false,"cacheDirectory":false}!./node_modules/vue-loader/lib/selector.js?type=script&index=0!./layouts/default.vue 9:0-46
 @ ./layouts/default.vue
 @ ./node_modules/babel-loader/lib?{"presets":["vue-app"],"babelrc":false,"cacheDirectory":false}!./node_modules/vue-loader/lib/selector.js?type=script&index=0!./.nuxt/App.vue
 @ ./.nuxt/App.vue
 @ ./.nuxt/index.js
 @ ./.nuxt/server.js
Error: Webpack build exited with errors
    at /Users/wangdan/Desktop/WorkSpace/ckmongo/node_modules/nuxt/lib/builder/builder.js:379:27

5.if delete generated yarn file and use old yarn file(Before this created project of yarn file）to replace this generated yarn file, npm run build to execute, result is success.