Post request in browser gives 404

We have a problem where a POST request gives 404 from the browser but same endpoint works with GET requests. The same POST request also works from Postman.It's also worth mentioning that it works locally but not in the customers environment.

Frontend is React and backend is Aspnet core API.

[GET] api/orders --> works, [POST] api/orders --> 404 in browser but works from Postman