[SOLVED] Strange compilation of SCSS

Hi there everyone! I'm going through the new Sass Basics course and have encountered some strange behavior regarding the compilation of the scss to CSS. I am using the ruby gem version 3.4.23(Selective Steve). I have checked for updates and it states there is nothing to update. The CSS being generated is not what I'm expecting nor is it what Guil is showing in his video.

The exact same code (literally copy and pasted) into Sassmeister does produce the output I expect and that Guil shows. Yes, I'm watching the files for changes and it is compiling, but not in the way I would expect. For instance:

This rule:

.btn {
  color: $white;
  display: inline-block;
  font-weight: bold;
  text-decoration: none;
  text-transform: uppercase;
  padding: 0.75em 1.5em;
  border-radius: 0.35em;
  &-callout {
    font-size: 1.1em;
    background-color: $color-secondary;
  }
  &-info {
    font-size: 0.85em;
    background-color: $color-primary;  
    margin-top: auto;
  }
}

Compiles to this on Sassmeister (which is what I would expect):

.btn {
  color: #fff;
  display: inline-block;
  font-weight: bold;
  text-decoration: none;
  text-transform: uppercase;
  padding: 0.75em 1.5em;
  border-radius: 0.35em;
}
.btn-callout {
  font-size: 1.1em;
  background-color: #b13c69;
}
.btn-info {
  font-size: 0.85em;
  background-color: #278da4;
  margin-top: auto;
}

But on my system it compiles to this:

.btn-info {
  color: #fff;
  display: inline-block;
  font-size: 0.85em;
  font-weight: bold;
  text-decoration: none;
  text-transform: uppercase;
  padding: 0.75em 1.5em;
  border-radius: 0.35em;
  background-color: #278da4;
  margin-top: auto; }

Note that the base class for "btn" doesn't appear at all. This is the only rule for anything regarding btn in my generated CSS. I've even tried compiling directly from the finished code from the project files. And this is one example. There are others. What am I missing?

I appreciate any help!