Consider adding an error boundary to your tree to customize error handling behavior.
Visit https://reactjs.org/link/error-boundaries to learn more about error boundaries.
Fix the issue with AppBarComponent and the Router/BrowserRouter that is affecting the bundler.
This error I found in the browser console.
AppBarComponent@http://localhost:3000/static/js/bundle.js:326:72 div Router@http://localhost:3000/static/js/bundle.js:68464:7 BrowserRouter@http://localhost:3000/static/js/bundle.js:66433:7 App
Consider adding an error boundary to your tree to customize error handling behavior. Visit https://reactjs.org/link/error-boundaries to learn more about error boundaries.
Fix the issue with AppBarComponent and the Router/BrowserRouter that is affecting the bundler.