I’m working on an Angular application with a file upload functionality. In the development environment, uploading files using FormData works fine. However, in the production environment, where the Angular app is deployed on a server with the domain abc.com and the file upload service is on bcddomain.com, it’s not working. Even using Postman, the file upload to the production URL fails. How can I determine if this issue is related to the frontend (Angular) or the backend (Java)?