Create order in shopify using dummy data from open AI GPT 3.5

Hello all,

Iam a business school teacher and I want to build an analytics dashboard for Shopify orders using make and airtable with my students. for that matter I need dummy data. Now the idea is to produce shopify order dummy data using the GPT 3.5 module and letting it output a JSON string with dummy data, parse the JSON Data and create an order in Shopify.

So far I tried to copy this tutorial. Iam getting to the point were I have aggregated the line data using the aggregator and the output looks fine. But the Shopify module is always giving me an error (see screenshots).

Any ideas? I would highly appreciate your support.