C:\Users\vit01\OneDrive\바탕 화면\스파르타스터디> expo start

Starting project at C:\Users\vit01\OneDrive\바탕 화면\스파르타스터디

Unable to find expo in this project - have you run yarn / npm install yet?

C:\Users\vit01\OneDrive\바탕 화면\스파르타스터

라고뜨는데 뭘 더 설치해야하나요??