Error Scss code did not run on Visual Studio

I’m trying Sass on FCC and trying it on Visual Code

And when I run the code it OK

but when I trying to add simple square something is going wrong

Maybe somebody could suggest me what is wrong with it?

hi, do you figured out your html file is rendering main.css and your writing code i main.scss

what does your file structure look like? I notice its looking for it in D:/scss/scss …is that right?

Dose a problem in this?
I will try to change it.