Error when adding Items to CMS Collection via Zapier

I’m attempting to create a product feed in Webflow from an RSS feed via Zapier. I like to think I’m pretty advanced with Zapier but for some reason I can’t successfully push an item through to Webflow. Instead, I get the following error:

I’ve tried eliminating potentially troublesome fields (Option fields for example) fields one by one, and even removed all fields other than the two required fields. My Webflow site has CMS hosting (paid) and the collection has been set up correctly as I would expect.

Any ideas?

I have having the exact same issue. Gotta be some feed wizards here that can help.