react native android run 중에 발생한 에러 정리 합니다. error Failed to install the app. Make sure you have the Android development environment set up: https://reactnative.dev/docs/getting-started.html#android-development-environment. Run CLI with --verbose flag for more details. Error: Command failed: ./gradlew app:installDebug -PreactNativeDevServerPort=8081 react native 첫 프로젝트에서 에러가 난다면 아래 가이드에 따라 6가지 스텝을..