Total newbie here. I hope this is the correct forum section for this thread.
I've been setting up my Shopify store, things all seemed to work about a week ago. But then after I did a test purchase and went back to product page and click "add to cart" I get this error:
Required parameter missing or invalid: items
Does anyone know what could be causing this problem? Any help would be greatly appreciated!
Oh, and I am using the Narrative theme.