特此记录一下解决方案：
https://github.com/vuejs/vue-cli/issues/3678
vue打包编译报错，These dependencies were not found:core-js/modules/es
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vue These dependencies were not found: * core-js/modules/es.array.iterator in ./node_modules/@babe
解决 These dependencies were not found: * core-js/modules/es6.array.fill in xxx 之类的问题
vue.js 进行初始化遇到的关于core-js的错误@core-js/modules/es6.array.find-index (ERROR Failed to compile with 164 errors These dependencies were not found)
VUE项目启动报错： core-js/modules/. …
vue启动报错These dependencies were not found:
npm 报错 Cannot find module 'core-js/modules/es6.regexp.constructor'
vue-cli 3.x版本执行vue ui命令后提示Error: Cannot find module ‘core-js/modules/es7.object.entries’报错的解决方法
vue.js 进行初始化遇到的关于core-js的错误@core-js/modules/es6.array.find-index]
npm run serve 报错：To install it, you can run: npm install --save core-js/modules/es.array.slice
npm install 报错解决(To install them, you can run: npm install --save core-js/modules/es6.array）