* 겪고 있는 문제 상황을 최대한 자세하게 작성해주세요.

* 문제 해결을 위해 어떤 시도를 해보았는지 구체적으로 함께 알려주세요.

강의 4주차 하고있는데요 갑자기 expo start를 실행하면 이런 에러 메세지가 떠요

뭐가 문제일까요?

작성한 코드 및 에러 메세지

Starting project at C:\Users\pc\Desktop\sparta_study

Missing package "metro" in the project at: C:\Users\pc\Desktop\sparta_study

This usually means `react-native` is not installed. Please verify that dependencies in package.json include "react-native" and run `yarn` or `npm install`.

Error: Missing package "metro" in the project at: C:\Users\pc\Desktop\sparta_study

This usually means `react-native` is not installed. Please verify that dependencies in package.json include "react-native" and run `yarn` or `npm install`.

  at resolveFromProject (C:\Users\pc\AppData\Roaming\npm\node_modules\expo-cli\node_modules\@expo\dev-server\src\metro\importMetroFromProject.ts:21:11)

  at importFromProject (C:\Users\pc\AppData\Roaming\npm\node_modules\expo-cli\node_modules\@expo\dev-server\src\metro\importMetroFromProject.ts:27:18)

  at importMetroFromProject (C:\Users\pc\AppData\Roaming\npm\node_modules\expo-cli\node_modules\@expo\dev-server\src\metro\importMetroFromProject.ts:41:10)

  at runMetroDevServerAsync (C:\Users\pc\AppData\Roaming\npm\node_modules\expo-cli\node_modules\@expo\dev-server\src\MetroDevServer.ts:80:39)

  at startDevServerAsync (C:\Users\pc\AppData\Roaming\npm\node_modules\expo-cli\node_modules\xdl\src\start\startDevServerAsync.ts:77:77)

  at startAsync (C:\Users\pc\AppData\Roaming\npm\node_modules\expo-cli\node_modules\xdl\src\start\startAsync.ts:69:41)