I have made sure that bundler and emulator are running.
If I use this commend
react-native bundle --platform android --dev false --entry-file index.android.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res
It might work but refresh won't happen when I press rr in emulator.
I have also tried reversal of abd adb reverse tcp:8081 tcp:8081.
Nothing works for me.