[React Native] Execution failed for task ':app:mergeDebugAssets'.

오류

• What went wrong:
  Execution failed for task ':app:mergeDebugAssets'.

  Could not resolve all files for configuration ':app:debugRuntimeClasspath'.
  Could not resolve com.facebook.react:react-native:0.17.+.
  Required by:
  project :app > project :react-native-intl
  Failed to list versions for com.facebook.react:react-native.
  Unable to load Maven meta-data from https://jcenter.bintray.com/com/facebook/react/react-native/maven-metadata.xml.
  Could not HEAD 'https://jcenter.bintray.com/com/facebook/react/react-native/maven-metadata.xml'.
  org.apache.http.client.ClientProtocolException (no error message)

해결 방법

참고 블로그: https://kasumil.tistory.com/136
cd android
./gradlew clean build --refresh-dependencies
android폴더로 이동한 후 clean으로 해결했다.

🚨꼭 cd..로 원래 프로젝트 폴더로 이동한 후 npm run android실행해야 오류 안납니당 실행하기 전에 폴더 꼭 확인하기!🚨