![Postcard/ mini print pack (any design) TS inspired retro magazine covers](http://novaandthenewmoon.com/cdn/shop/products/64abdfe61c4399904deb6844_530x@2x.png?v=1705324462)
You included the snippet swatch.liquid with the name of a product option — 'Color'
— that does not belong to your product.
Use {% include 'swatch' with 'name of your product option here' %}
Example: {% include 'swatch' with 'Color' %}
This is case-sensitive! Do not put in 'color'
if your product option name is 'Color'
.