请问这是什么情况，mpvue项目导入进来想运行npm run dev但是一直报错

F:\book\wx-book-master>npm run dev

[email protected] dev F:\book\wx-book-master
node build/dev-server.js

ERROR Failed to compile with 18 errors 3:13:39 PM

error in ./src/App.vue

Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)

@ ./node_modules/extract-text-webpack-plugin/dist/loader.js?{“omit”:1,“remove”:true}!./node_modules/vue-style-loader!./node_modules/css-loader?{“minimize”:false,“sourceMap”:false}!./node_modules/mpvue-loader/lib/style-compiler?{“vue”:true,“id”:“data-v-ea2194a2”,“scoped”:false,“hasInlineConfig”:false}!./node_modules/px2rpx-loader?{“baseDpr”:1,“rpxUnit”:0.5}!./node_modules/postcss-loader/lib?{“sourceMap”:true}!./node_modules/sass-loader/lib/loader.js?{“sourceMap”:false}!./node_modules/mpvue-loader/lib/selector.js?type=styles&index=0!./src/App.vue 4:14-520
@ ./src/App.vue
@ ./src/main.js

error in ./src/components/SearchBar.vue

Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)

@ ./node_modules/extract-text-webpack-plugin/dist/loader.js?{“omit”:1,“remove”:true}!./node_modules/vue-style-loader!./node_modules/css-loader?{“minimize”:false,“sourceMap”:false}!./node_modules/mpvue-loader/lib/style-compiler?{“vue”:true,“id”:“data-v-67c2c034”,“scoped”:true,“hasInlineConfig”:false}!./node_modules/px2rpx-loader?{“baseDpr”:1,“rpxUnit”:0.5}!./node_modules/postcss-loader/lib?{“sourceMap”:true}!./node_modules/sass-loader/lib/loader.js?{“sourceMap”:false}!./node_modules/mpvue-loader/lib/selector.js?type=styles&index=0!./src/components/SearchBar.vue 4:14-543
@ ./src/components/SearchBar.vue
@ ./node_modules/babel-loader/lib!./node_modules/mpvue-loader/lib/selector.js?type=script&index=0!./src/pages/history/index.vue
@ ./src/pages/history/index.vue
@ ./src/pages/history/main.js

error in ./src/pages/history/index.vue

Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)

@ ./node_modules/extract-text-webpack-plugin/dist/loader.js?{“omit”:1,“remove”:true}!./node_modules/vue-style-loader!./node_modules/css-loader?{“minimize”:false,“sourceMap”:false}!./node_modules/mpvue-loader/lib/style-compiler?{“vue”:true,“id”:“data-v-10f92aba”,“scoped”:true,“hasInlineConfig”:false}!./node_modules/px2rpx-loader?{“baseDpr”:1,“rpxUnit”:0.5}!./node_modules/postcss-loader/lib?{“sourceMap”:true}!./node_modules/sass-loader/lib/loader.js?{“sourceMap”:false}!./node_modules/mpvue-loader/lib/selector.js?type=styles&index=0!./src/pages/history/index.vue 4:14-557
@ ./src/pages/history/index.vue
@ ./src/pages/history/main.js

error in ./src/pages/index/index.vue

Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)

@ ./node_modules/extract-text-webpack-plugin/dist/loader.js?{“omit”:1,“remove”:true}!./node_modules/vue-style-loader!./node_modules/css-loader?{“minimize”:false,“sourceMap”:false}!./node_modules/mpvue-loader/lib/style-compiler?{“vue”:true,“id”:“data-v-523b4038”,“scoped”:true,“hasInlineConfig”:false}!./node_modules/px2rpx-loader?{“baseDpr”:1,“rpxUnit”:0.5}!./node_modules/postcss-loader/lib?{“sourceMap”:true}!./node_modules/sass-loader/lib/loader.js?{“sourceMap”:false}!./node_modules/mpvue-loader/lib/selector.js?type=styles&index=0!./src/pages/index/index.vue 4:14-557
@ ./src/pages/index/index.vue
@ ./src/pages/index/main.js

error in ./src/pages/search/index.vue

Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)

@ ./node_modules/extract-text-webpack-plugin/dist/loader.js?{“omit”:1,“remove”:true}!./node_modules/vue-style-loader!./node_modules/css-loader?{“minimize”:false,“sourceMap”:false}!./node_modules/mpvue-loader/lib/style-compiler?{“vue”:true,“id”:“data-v-1801a558”,“scoped”:true,“hasInlineConfig”:false}!./node_modules/px2rpx-loader?{“baseDpr”:1,“rpxUnit”:0.5}!./node_modules/postcss-loader/lib?{“sourceMap”:true}!./node_modules/sass-loader/lib/loader.js?{“sourceMap”:false}!./node_modules/mpvue-loader/lib/selector.js?type=styles&index=0!./src/pages/search/index.vue 4:14-557
@ ./src/pages/search/index.vue
@ ./src/pages/search/main.js

error in ./src/pages/details/index.vue

Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)

@ ./node_modules/extract-text-webpack-plugin/dist/loader.js?{“omit”:1,“remove”:true}!./node_modules/vue-style-loader!./node_modules/css-loader?{“minimize”:false,“sourceMap”:false}!./node_modules/mpvue-loader/lib/style-compiler?{“vue”:true,“id”:“data-v-c8511230”,“scoped”:true,“hasInlineConfig”:false}!./node_modules/px2rpx-loader?{“baseDpr”:1,“rpxUnit”:0.5}!./node_modules/postcss-loader/lib?{“sourceMap”:true}!./node_modules/sass-loader/lib/loader.js?{“sourceMap”:false}!./node_modules/mpvue-loader/lib/selector.js?type=styles&index=0!./src/pages/details/index.vue 4:14-557
@ ./src/pages/details/index.vue
@ ./src/pages/details/main.js

error in ./src/pages/source/index.vue

Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)

@ ./node_modules/extract-text-webpack-plugin/dist/loader.js?{“omit”:1,“remove”:true}!./node_modules/vue-style-loader!./node_modules/css-loader?{“minimize”:false,“sourceMap”:false}!./node_modules/mpvue-loader/lib/style-compiler?{“vue”:true,“id”:“data-v-fd8d17ea”,“scoped”:true,“hasInlineConfig”:false}!./node_modules/px2rpx-loader?{“baseDpr”:1,“rpxUnit”:0.5}!./node_modules/postcss-loader/lib?{“sourceMap”:true}!./node_modules/sass-loader/lib/loader.js?{“sourceMap”:false}!./node_modules/mpvue-loader/lib/selector.js?type=styles&index=0!./src/pages/source/index.vue 4:14-557
@ ./src/pages/source/index.vue
@ ./src/pages/source/main.js

error in ./src/pages/chapter/index.vue

Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)

@ ./node_modules/extract-text-webpack-plugin/dist/loader.js?{“omit”:1,“remove”:true}!./node_modules/vue-style-loader!./node_modules/css-loader?{“minimize”:false,“sourceMap”:false}!./node_modules/mpvue-loader/lib/style-compiler?{“vue”:true,“id”:“data-v-150ba19a”,“scoped”:false,“hasInlineConfig”:false}!./node_modules/px2rpx-loader?{“baseDpr”:1,“rpxUnit”:0.5}!./node_modules/postcss-loader/lib?{“sourceMap”:true}!./node_modules/sass-loader/lib/loader.js?{“sourceMap”:false}!./node_modules/mpvue-loader/lib/selector.js?type=styles&index=0!./src/pages/chapter/index.vue 4:14-558
@ ./src/pages/chapter/index.vue
@ ./src/pages/chapter/main.js

error in ./src/components/BookItem.vue

Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)

@ ./node_modules/extract-text-webpack-plugin/dist/loader.js?{“omit”:1,“remove”:true}!./node_modules/vue-style-loader!./node_modules/css-loader?{“minimize”:false,“sourceMap”:false}!./node_modules/mpvue-loader/lib/style-compiler?{“vue”:true,“id”:“data-v-bef0737a”,“scoped”:false,“hasInlineConfig”:false}!./node_modules/px2rpx-loader?{“baseDpr”:1,“rpxUnit”:0.5}!./node_modules/postcss-loader/lib?{“sourceMap”:true}!./node_modules/sass-loader/lib/loader.js?{“sourceMap”:false}!./node_modules/mpvue-loader/lib/selector.js?type=styles&index=0!./src/components/BookItem.vue 4:14-543
@ ./src/components/BookItem.vue
@ ./node_modules/babel-loader/lib!./node_modules/mpvue-loader/lib/selector.js?type=script&index=0!./src/pages/index/index.vue
@ ./src/pages/index/index.vue
@ ./src/pages/index/main.js

error in ./src/pages/source/index.vue

Module build failed: ModuleBuildError: Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)
at runLoaders (F:\book\wx-book-master\node_modules\webpack\lib\NormalModule.js:195:19)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:367:11
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:233:18
at runSyncOrAsync (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:143:3)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:232:2)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:221:10)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:236:3
at Object.context.callback (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:111:13)
at Object.module.exports (F:\book\wx-book-master\node_modules\mpvue-loader\lib\selector.js:21:8)

error in ./src/components/SearchBar.vue

Module build failed: ModuleBuildError: Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)
at runLoaders (F:\book\wx-book-master\node_modules\webpack\lib\NormalModule.js:195:19)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:367:11
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:233:18
at runSyncOrAsync (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:143:3)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:232:2)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:221:10)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:236:3
at Object.context.callback (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:111:13)
at Object.module.exports (F:\book\wx-book-master\node_modules\mpvue-loader\lib\selector.js:21:8)

error in ./src/components/BookItem.vue

Module build failed: ModuleBuildError: Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)
at runLoaders (F:\book\wx-book-master\node_modules\webpack\lib\NormalModule.js:195:19)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:367:11
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:233:18
at runSyncOrAsync (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:143:3)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:232:2)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:221:10)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:236:3
at Object.context.callback (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:111:13)
at Object.module.exports (F:\book\wx-book-master\node_modules\mpvue-loader\lib\selector.js:21:8)

error in ./src/pages/chapter/index.vue

Module build failed: ModuleBuildError: Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)
at runLoaders (F:\book\wx-book-master\node_modules\webpack\lib\NormalModule.js:195:19)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:367:11
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:233:18
at runSyncOrAsync (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:143:3)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:232:2)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:221:10)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:236:3
at Object.context.callback (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:111:13)
at Object.module.exports (F:\book\wx-book-master\node_modules\mpvue-loader\lib\selector.js:21:8)

error in ./src/pages/details/index.vue

Module build failed: ModuleBuildError: Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)
at runLoaders (F:\book\wx-book-master\node_modules\webpack\lib\NormalModule.js:195:19)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:367:11
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:233:18
at runSyncOrAsync (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:143:3)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:232:2)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:221:10)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:236:3
at Object.context.callback (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:111:13)
at Object.module.exports (F:\book\wx-book-master\node_modules\mpvue-loader\lib\selector.js:21:8)

error in ./src/pages/history/index.vue

Module build failed: ModuleBuildError: Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)
at runLoaders (F:\book\wx-book-master\node_modules\webpack\lib\NormalModule.js:195:19)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:367:11
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:233:18
at runSyncOrAsync (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:143:3)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:232:2)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:221:10)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:236:3
at Object.context.callback (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:111:13)
at Object.module.exports (F:\book\wx-book-master\node_modules\mpvue-loader\lib\selector.js:21:8)

error in ./src/pages/index/index.vue

Module build failed: ModuleBuildError: Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)
at runLoaders (F:\book\wx-book-master\node_modules\webpack\lib\NormalModule.js:195:19)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:367:11
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:233:18
at runSyncOrAsync (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:143:3)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:232:2)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:221:10)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:236:3
at Object.context.callback (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:111:13)
at Object.module.exports (F:\book\wx-book-master\node_modules\mpvue-loader\lib\selector.js:21:8)

error in ./src/pages/search/index.vue

Module build failed: ModuleBuildError: Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)
at runLoaders (F:\book\wx-book-master\node_modules\webpack\lib\NormalModule.js:195:19)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:367:11
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:233:18
at runSyncOrAsync (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:143:3)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:232:2)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:221:10)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:236:3
at Object.context.callback (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:111:13)
at Object.module.exports (F:\book\wx-book-master\node_modules\mpvue-loader\lib\selector.js:21:8)

error in ./src/App.vue

Module build failed: ModuleBuildError: Module build failed: Error: Cannot find module ‘node-sass’
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.sassLoader (F:\book\wx-book-master\node_modules\sass-loader\lib\loader.js:46:72)
at runLoaders (F:\book\wx-book-master\node_modules\webpack\lib\NormalModule.js:195:19)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:367:11
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:233:18
at runSyncOrAsync (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:143:3)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:232:2)
at iterateNormalLoaders (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:221:10)
at F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:236:3
at Object.context.callback (F:\book\wx-book-master\node_modules\loader-runner\lib\LoaderRunner.js:111:13)
at Object.module.exports (F:\book\wx-book-master\node_modules\mpvue-loader\lib\selector.js:21:8)