Issue with displaying news short description

Hi!
Faced the problem of displaying a short description of the news.

I set up the creation of posts and everything works fine. But I cannot show the short description on the blog page

I am using a loop to output the description

{% set postslist = collections.post %}

    {% for post in postslist %}
  • {{ post.data.title }} - {{ post.date | readableDate }} - {{ post.data.description }}
  • {% endfor %}

collections.post – refers to json tags “post” as shown in the examples

But when I run the project, I get the error - tag set not found …

https://youthful-benz-dad281.netlify.app/
https://github.com/SegunWeb/testNetlify

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