Compilation Error after lecture 13

Hello. Thank you for creating this series of videos.

I am using Bootstrap v5.2.0-beta1 and after or during lecture 13 I began to get compilation errors each time I save the main.scss file.

Here is the first one:

I tried to solve for it by going to _utilities.scss and commenting out the code looking for $negative-spacers.

My _utilities.scss looks like this:

That seems to fix any compilation error associated with $negative-spacers but after making a change to and saving main.scss more compilation errors continue to appear.

This is now what I see:

As I fix one undefined variable more are found as the program goes down the main.scss file. Each time the program finds a compilation error it does not move past that line, which I believe causes everything below that line to not be seen or complied and then not rendered on the site.

I downloaded your source code from the lessons separate to test and I am having the same issues.
I can't seem to find anything on the web to fix these compilation errors.

Are you able to help me figure out where I have gone wrong?

Thank you