react-webpack/js/app.js: Unexpected token (25:4)

[xiaokaike]

  render() {
    return (
      <div className="nav">
        <Link to="app" className="homelink">Home  </Link>
        <Link to="hello" className="hellolink">  Say Hello</Link>
        <Link to="form" className="formlink">  This is a form with bootstrap</Link>
        {/* this is the importTant part */}
        <RouteHandler/>
        <Timer start={Date.now()} />
        <Menu items={['Home','About','Contect']} />
      </div>
    );

      <div>Hello world!</div>
    );  }