Could not connect to React Native development server on Android

Question

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

Could not connect to development server

Answer 1

When I started a new project

react-native init MyPrroject

I got could not connect to development server on both platforms iOS and Android.

My solution is to

sudo lsof -i :8081
//find a PID of node
kill -9 

Also make sure that you use your local IP address

ipconfig getifaddr en0