I am getting the following exception in the pim feed that causes the product category fields options not to render and therefore not the rest of the options either. It does not matter which provider I choose. I cannot see anything off with the data in the tables EcomProductCategory and EcomProductCategoryField.
Also, whenever I choose some of the available options for Product custom fields for example, the selected values are not preserved when I save the feed.
This project is running DW 9.12.3