can not use dynamic import

[chnliquan]

when i use dynamic import in react router as follows, the following problem has occurred
the error only occurred in development mode, not in production mode

import React from 'react'
import { Route, Redirect, withRouter, } from 'react-router-dom'
import Loadable from 'react-loadable'

import CircularProgress from '@material-ui/core/CircularProgress'
// right

// import TopicList from 'views/topic-list'
// import TopicDetail from 'views/topic-detail'
// import TopicCreate from 'views/topic-create'
// import UserLogin from 'views/user/login'
// import UserInfo from 'views/user/info'

// wrong
const TopicList = Loadable({
  loader: () => import('views/topic-list'),
  loading() {
    return <CircularProgress />
  },
})

const TopicDetail = Loadable({
  loader: () => import('views/topic-detail'),
  loading() {
    return <CircularProgress />
  },
})

const TopicCreate = Loadable({
  loader: () => import('views/topic-create'),
  loading() {
    return <CircularProgress />
  },
})

const UserLogin = Loadable({
  loader: () => import('views/user/login'),
  loading() {
    return <CircularProgress />
  },
})

const UserInfo = Loadable({
  loader: () => import('views/user/info'),
  loading() {
    return <CircularProgress />
  },
})


export default () => [
  <Route exact render={() => <Redirect to="/list" />} path="/" key="home" />,
  <Route component={TopicList} path="/list" key="list" />,
  <Route component={TopicDetail} path="/detail/:id" key="detail" />,
]

{ Error: Cannot find module './0.server-entry.js'
    at Function.Module._resolveFilename (module.js:548:15)
    at Function.Module._load (module.js:475:25)
    at Module.require (module.js:597:17)
    at require (internal/module.js:11:18)
    at Function.requireEnsure [as e] (server-entry.js:46:25)
    at loader (webpack:///./client/router/index.jsx?:69:60)
    at load (/Users/ender/learning/github/react-cnode/node_modules/react-loadable/lib/index.js:28:17)
    at init (/Users/ender/learning/github/react-cnode/node_modules/react-loadable/lib/index.js:121:13)
    at new LoadableComponent (/Users/ender/learning/github/react-cnode/node_modules/react-loadable/lib/index.js:150:7)
    at /Users/ender/learning/github/react-cnode/node_modules/react-tree-walker/dist/react-tree-walker.js:174:30 code: 'MODULE_NOT_FOUND' }