Q:

File to import not found or unreadable with Jekyll and Sass

I am trying to link to a sass library I downloaded via node.
The error I'm getting:
Conversion error: Jekyll::Converters::Scss encountered an error while converting 'assets/css/styles.scss':
   Error: File to import not found or unreadable: @library/path/src/index.scss. on line 3:1
   of @library/path/src/index.scss from line 3:1 of _sass/styles.scss from line 1:1
   of styles.scss >> @import '@library/path/src/index'; ^ 
                    ------------------------------------------------
      Jekyll 4.0.0   Please append `--trace` to the `serve` command 
                     for any additional information or backtrace. 

My sass file looks like:
@import '@library/path/src/index';

I added to my package.json file:
"sass": {
    "includePaths": ["./node_modules"]
}

The only hint the library gives of something that I'm missing is First, make sure your build system is configured so that the node_modules directory is in the list of Sass includePaths. I'm not sure where I can confirm that.
Note: this doesn't even work even if I link directly to the file in node_modules
../node_modules/@library/path/src/index.scss

A:

I figured it out!
I had to add to my config.yml
  load_paths:
    - _sass
    - node_modules

