video1.0<iframe src="https://www.loom.com/embed/1b41956c10014c5ea87c0267686ec51f" frameborder="0" width="1664" height="1248" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>12481664Loomhttps://www.loom.com12481664https://cdn.loom.com/sessions/thumbnails/1b41956c10014c5ea87c0267686ec51f-00001.gif280.63955068299987In this video, I continue where we left off, discussing the setup of highlight in the frontend and backend app, and how to connect the two. I explain the concept of tracing origins and how the frontend instruments XHR and FET. I also demonstrate how to set specific origins and HTTP headers to connect frontend requests with backend actions. Additionally, I showcase a new button that makes a request to the backend endpoint and handle errors in the rendering code. Finally, I highlight the benefits of the React error boundary and how it allows users to provide feedback on bugs.