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

Basically this error comes when npm server is not started.

So at first check the npm server status, if it's not running then start npm with command npm start and you can see in terminal:

Loading dependency graph done.

Now npm is started and run your app in another terminal with command

react-native run-android