kibana-123/ui_framework/doc_site/src/views/not_found/not_found_view.jsx

Kibana is an open source (Apache Licensed), browser based analytics and search dashboard for Elasticsearch. Kibana is a snap to setup and start using. Kibana strives to be easy to get started with, while also being flexible and powerful, just like Elastic

import React, {
  Component,
} from 'react';

export default class NotFoundView extends Component {

  constructor(props) {
    super(props);
  }

  render() {
    return (
      <div>
        <h1>Page not found.</h1>
      </div>
    );
  }

}