Font Awesome icon not appearing in footer

[raacampbell]

I want to add an FA link icon before a link in my footer. So in _config.yml I have added:

    - label: "My text here"
      icon: "fab fa-fw fa-link"
      url: "https://www.someurl.com/"

The link appears in my footer but the space where the icon ought to appear is empty. Out of desperation I tried adding the following to _utilities.scss but it didn't help.

  /* HACK  */
  .fa-link {
    color: red;
  }

Any ideas what is going on?

[iBug]

fa-link is a solid icon, not a brand icon. Use fas instead of fab.

Next time best to just copy the code from https://fontawesome.com/v5/icons/link?f=classic&s=solid.