ERROR  Error: Cannot find module 'vue-loader-v16/package.json'
Error: Cannot find module 'vue-loader-v16/package.json'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:594:15)
    at Function.Module._load (internal/modules/cjs/loader.js:520:25)
    at Module.require (internal/modules/cjs/loader.js:650:17)
    at require (internal/modules/cjs/helpers.js:20:18)
    at api.chainWebpack.webpackConfig (/Users/apple/Desktop/vue/elm/node_modules/@vue/cli-service/lib/config/base.js:114:23)
    at webpackChainFns.forEach.fn (/Users/apple/Desktop/vue/elm/node_modules/@vue/cli-service/lib/Service.js:236:40)
    at Array.forEach (<anonymous>)
    at Service.resolveChainableWebpackConfig (/Users/apple/Desktop/vue/elm/node_modules/@vue/cli-service/lib/Service.js:236:26)
    at Service.resolveWebpackConfig (/Users/apple/Desktop/vue/elm/node_modules/@vue/cli-service/lib/Service.js:240:48)
    at PluginAPI.resolveWebpackConfig (/Users/apple/Desktop/vue/elm/node_modules/@vue/cli-service/lib/PluginAPI.js:132:25)
npm ERR! code ELIFECYCLE
npm ERR! errno 1

解決方法

1:
更新npm： npm install npm@latest -g
2:
然后：npm i --save-dev vue-loader-v16
3：
然后運行npm run serve