New Born Free BRAZILIAN BUNDLE HD 4X5 CIERRE DE CORDONES-NUEVO PROFUNDIDAD 14" (1/200) - BBHDC45N14

You included the snippet swatch.liquid with the name of a product option — '1st 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'.