First Fetch API call cancelled by the second in IE11

Question

I have a ReactJS application that works as expected in Chrome, but fails in IE-11.

The problem is this - we have two drop down lists which are populated from rest ser

Answer 1

Unrelated to ReactJS, but I hope useful to others who land here as I did.

I found the Github fetch polyfill and TaylorHakes' Promise polyfill nice and easy to get started with in the context of my ASP.NET MVC web application. Both were recommended by https://ourcodeworld.com