Recently purchased the ‘Flow’ theme and the add to cart button and dynamic buy button aren’t working? Has anyone had this issue before?
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I’m having the same issue, and I think I found the fix for my problem.
Problem: The add to cart button on PDP isn’t working. When you click it, it sends a request to /cart/add.js from onAddToCart() and there’s a 400 error. The add to cart button works on the home page, which uses functions other than onAddToCart(), so clearly that function is upset about something.
Solution: We just added the product id to the form, and it’s working now. Specifically, in template–product.liquid, under <div class="paymentButtonsWrapper">, we added <input type="hidden" name="id" value="{{ product.variants.first.id }}" />
I’m still confused as to how this problem arose; I don’t think our devs introduced it. I’m a little concerned that this might not work in the future if different variants are added to the products. Will need more testing.