> .api.DeviceException: No connected devices! gradlew app:installDebug -PreactNativeDevServerPort=8081Įxecution failed for task ':app:installDebug'. Run CLI with -verbose flag for more details.Įrror: Command failed. Make sure you have an Android emulator running or a device connected. I just initialized a new React Native project via:Īnd I am already getting this error: BUILD FAILED in 3sĮrror Failed to install the app.