vue报错：building modules 1/1 modules 0 activeevents.js:174 throw er; // Unhandled 'error' event

1、building modules 1/1 modules 0 activeevents.js:174 throw er; // Unhandled ‘error’ event
没有设置host，或者host不对。在 \config\index.js里面更改

const path = require('path')

module.exports = {
  dev: {
    // Paths
    assetsSubDirectory: 'static',
    assetsPublicPath: '/',
    proxyTable: {},
    // Various Dev Server settings
    host: '192.168.9.120', // can be overwritten by process.env.HOST
    port: 8080, // can be overwritten by process.env.PORT, if port is in use, a free one will be determined
    ...
}