Root Sage theme styles are not working!

One of the websites that I’m working with has a custom build theme using Sage Roots. It works just fine on the live site and I was trying to setup it up in my localhost to work with it. For some reasons, none of the website styles and working correctly. I checked all the CSS files and made sure all of them are there but still it doesn’t work. Is that because I need to install any dependencies for the Sage theme or something else? Any thoughts on this guys?

Thanks!

In Sage 9, the asset pipeline comes through Webpack. You’ll need to run yarn from the theme root and then start or production build the site with yarn as well.