Not getting category_index property in the products list on frontend
I am fetching the products list by using swell front-end APIs - https://developers.swell.is/frontend-api/products
In the developer console, I checked that product model contains a category_index key which contains a list of category ids. I was getting this field earlier, but since yesterday, the frontend-API has been returning my error saying that I don't have permission to expand this field.
I'm attaching console error log and my code that I've been using below.