Shopify linking product using SEO handle coding

I followed the directions for the second way to tag a product to a blog

This is the website I used https://happypoints.io/shopify-add-products-to-blog-post-c2-stt-66/ This is the code that was entered {% assign my_description = article.content | split: '=== split content ===' %}

 {% assign  my_description_size = my_description.size | minus: 2 %}
  {{ my_description | first}}
 <div class="show-product-list">           
   {% if article.tags.size > 0 %}             
       {% for tag in article.tags %}
       {% paginate collections.all.products by 100 %}
       {%- for product in collections.all.products -%}
           {% if product.handle == tag %}
              <div class="product_item">
               {% include 'product-card-list' %} 
             </div> 
           {% endif %}
       {%- endfor -%}
       {% endpaginate %} 
       {% endfor %}          
   {% endif %}
 </div>
   {{ my_description | last}}

after following all the directions I received an error message saying

Liquid error (sections/article-template.liquid line 42): Could not find asset snippets/product-card-list.liquid

I am not sure why the product wont link to the blog using the seo handle. I have copied and pasted this code correctly and still getting this error

Collection code:

{% if collection.title == blank %}
  {% assign collection_image = blank %}
{% elsif collection.image %}
  {% assign collection_image = collection.image %}
{% else %}
  {% assign collection_image = collection.products.first.featured_media.preview_image %}
{% endif %}

{% unless collection.title == blank %}
  {% include 'card-image', type: collection_image, grid_style: grid_style %}
{% else %}
  <div class="card__image-wrapper">
    {% capture current %}{% cycle 1, 2, 3, 4, 5, 6 %}{% endcapture %}
    {{ 'collection-' | append: current | placeholder_svg_tag: 'placeholder-svg' }}
  </div>
{% endunless %}

<div class="card__info">
  <h3 class="card__name h4">{% if collection.title != blank %}{{ collection.title }}{% else %}{{ 'homepage.onboarding.collection_title' | t }}{% endif %}</h3>

  {% if section.settings.show_description and collection.description != blank %}
    <div class="rte card__description{% if width == '2' %} card__description--padding{% endif %}">
      {{ collection.description | strip_html | truncatewords: 15 }}
    </div>
  {% endif %}
</div>