Why the fonts of my project are applied in Development Stage, but not in Production, project made in NextJS

I’m making a test product and I’ve already finished the ui with the surprise that when I deploy it to production it doesn’t have Google Fonts applied, it’s worth emphasizing that I’m using the import method for the fonts, I share the project’s repository image without fontsimage with fonts

git repo:https://github.com/Thewoker/NextJs/tree/main/gym-ecommerce

I didn’t really try many alternatives, right now I’m trying to implement the fonts no longer by importing from Google Fonts but from a local file with the fonts already downloaded