Bug : Register API Fails with "Failed to fetch"

While trying to register a new user from the frontend deployed at https://travelagencyask.netlify.app, I encounter a "Failed to fetch" error when submitting the registration form.

Expected Result:
The new user account should be created successfully, and the user should be redirected or shown a success message.

Actual Result:
A popup appears: "Failed to fetch" — and the request fails.

Start at the registration form on https://travelagencyask.netlify.app and inspect the browser request and response for the Register API, then trace that request through the MERN application. Done means a new user account is created successfully and the user is redirected or shown a success message instead of “Failed to fetch”.

Written by the indexing model from the issue text.