Greetings guys,
I am using a react-native project.
I am facing issue when I run cmd react-native run-android

Error

Build failed
read the error above for details
Could not install the app on the device, read the error above for details.
Make sure you have an Android emulator running or a device connected and have
set up your Android development environment:
https://facebook.github.io/react-native/docs/android-setup.html

adb devices
List of devices attached
T062808LX3 device

Additional Information

• I am using windows 8.1
• I am not new in react-native I have build some project in react-native