text: 
  import React, { Component } from 'react';
  import './App.css';
  import MainLayout from './components/MainLayout';
  import Toolbar from './components/Toolbar';
  
  
  class App extends Component {
  
    render() {
      // const { traceRequest, network } = this.props;
      return (
        <div className="vbox flex-auto">
          <div className="hbox widget">
            <div className="vbox app-contents flex-auto">
              <div className="vbox widget">
                <div className="vbox flex-auto">
                  <div className="widget vbox">
                    <Toolbar />
                    <MainLayout />
                  </div>
                </div>
              </div>
            </div>
          </div>
        </div>
      );
    }
  }
  
  export default App;
  