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reactjs - React-router "Cannot GET /*" except for root url

I am willing to use React-router for my application, and I am trying the example given in the doc first, which I copied below. Now when I go to localhost:3000/, I see "App" as expected, but every other page, such as localhost:3000/inbox returns "Cannot GET /inbox". What am I missing here ?

var About = React.createClass({
  render: function () {
    return <h2>About</h2>;
}});

var Inbox = React.createClass({
  render: function () {
    return <h2>Inbox</h2>;
}});

var App = React.createClass({
  render () {
    return (
      <div><h1>App</h1>
        <RouteHandler/>
      </div>
)}});

var routes = (
  <Route path='/' handler={App}>
    <Route path="about" handler={About}/>
    <Route path="inbox" handler={Inbox}/>
  </Route>
);
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If you are using webpack-dev-server there is an option called history-api-fallback. If set to true 404s will fallback to /index.html.

Add the option to devServer section of the Webpack config like this:

devServer: {
    contentBase: 'app/ui/www',
    devtool: 'eval',
    hot: true,
    inline: true,
    port: 3000,
    outputPath: buildPath,
    historyApiFallback: true,
},

Link to Webpack docs: https://webpack.github.io/docs/webpack-dev-server.html


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