General Errors - 400/500 react handling

have been building a react website and may need support in creating error pages 404, 500. I've seen this link on handling granular error pages - [login to view URL] I am unsure - because I am using axios and callbacks - and many different services for this web project. The error page I have in place is just a 404 if the routes fail to work with other pages - so its a the bottom of the routes. <Route exact path="/" render={() => (<Home/>)} /> <Route component={Error} />