- A Minium Site.
- Go into Commerce → Product.
- Create a new simple product (eg. T-Shirt).
- Go into the SKU tab.
- Add and configure a valid SKU.
- Go into the Configuration tab and check if the Free Shipping toggle is enabled.
- Go into Minium and try to do the checkout with T-Shirt.
You can complete checkout without problems.
You can't complete checkout (no log, or console errors):