مشکل اجرای برنامه در React Native

سلام. بنده یک پروژه React Native دارم وقتی میخوام اجرا کنم اررور میده. موبایلم رو وصل کردم نشد . NOX نصب کردم نشد . Bluestacks هم نشد . Genymotion هم که وقتی ران میکنم صفحه مرگ ویندوز میاد. سی پیوم هم رایزن ای ام دی هست و نمیتونم از خود avd اس دی کا استفاده کنم. کسی راهی میتونه پیشنهاد بده ؟؟؟
react-native run-android
...
..
.
JS server already running.
Building and installing the app on the device (cd android && gradlew.bat installDebug)...

FAILURE: Build failed with an exception.

• What went wrong:
  A problem occurred configuring root project 'test'.

  Could not resolve all files for configuration ':classpath'.
  Could not resolve com.android.tools.build:gradle:3.1.4.
  Required by:
  project :
  Could not resolve com.android.tools.build:gradle:3.1.4.
  Could not get resource 'https://jcenter.bintray.com/com/android/tools/build/gradle/3.1.4/gradle-3.1.4.pom'.
  Could not GET 'https://jcenter.bintray.com/com/android/tools/build/gradle/3.1.4/gradle-3.1.4.pom'.
  Connect to jcenter.bintray.com:443 [jcenter.bintray.com/108.168.243.150] failed: Connection timed out: connect

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 22s
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/getting-started.html