In this episode, we focus on properly handling errors during file uploads. First, you'll see how to throw an exception on the backend if there's no file sent with the upload, making sure errors don't slip by unnoticed. We check if a file was uploaded and if not, we throw a specific exception to make handling it clear and explicit.
Next, we manually throw an exception just to test what an error looks like coming back to the client. When we try uploading a file, nothing shows up in the UI at first—so we move to the frontend to see how to display errors to users.
On the client side, we listen for error events from the uploader and store any error details in our component's state. This allows us to show an error message when something goes wrong. You'll see how to show messages like "Server responded with 500" directly in the UI, making it nice and clear to the user when there's a problem.
We also talk about cleaning up the error message: if the user tries another upload (for example, after fixing what went wrong), we clear the previous error so the UI isn't stuck showing an old message.
Finally, we discuss tweaking upload options, like how many times to retry a failed chunk, and encourage you to experiment with different error handling and retry strategies to see what works best for your app. By the end of this video, you'll have a much smoother error-handling experience for your uploader.