Liquid block containing the excerpt separator

Help
1

I can’t figure out what this means when I build the project. I have deleted every line in the file referenced, and that hasn’t gotten rid of this warning. What can I adjust?

The warning I receive when build the project.

Warning: Excerpt modified in _mycollection/how-to/index.md!
Found a Liquid block containing the excerpt separator “\n\n”.
The block has been modified with the appropriate closing tag.
Feel free to define a custom excerpt or excerpt_separator in the
document’s Front Matter if the generated excerpt is unsatisfactory.

My Current Install:
PLATFORMS
ruby

DEPENDENCIES
  jekyll (~> 4.0.0)
  jekyll-itafroma-collapse_newlines (~> 0.1.0)
  tzinfo-data

BUNDLED WITH
   1.17.2
2

Removing {% strip %} and {% endstrip %} removes this warning