Yeah, but like I said earlier in the thread, you already have access to the variants on that product via the product.variants field. You don’t need a separate action to get the variants. And in fact as you discovered earlier it seems like Default variants (that’s what they are called when there is only one) may actually not be included in that query even if you used it.
I would switch that For each loop to use product.variants, which should prove that you don’t need that Get product variant data action at all. So then delete it and you should be good.