Could not connect to React Native development server on Android

When I run react-native run-android, it gives me the following error:

Could not connect to development server

• Package server is running and I can access it directly from browseron my mobile device.
• My Android device is connected to computer and has debugging enabled (Ichecked using adb devices command).
• My Android version is 4.4.4 so I cannot use adb reverse command.
• I have set the ID address and port in Dev setting.
• USB debug is on.
• I use Windows 7.

How to fix this error?