React Native 0.60 connection to development server

Question

(I'm almost a newbie in React Native development) today I have started a new project in React Native 0.60 (react-native init MyApp).

After that I typed : react-native run-android to check if everything worked.

After the bundle process is finished I can finally get my welcome screen in my connected devices

But, if I try to reload the app from my devices I get this error:

How could I address this error ?

EDIT: Thank you for your answers, anyway, I have tried all solutions you suggest but I still get the same problem. I also noticed that when i run react-native run-android Metro Bundler (open in a new cli window) seems to start but it suddenly disappear. I think the problem could be with the message 'Deprecated Gradle features were used in this build, making it incompatible with Gradle 6.0'

Answer 1

react-native run-android not working in new react-native version

0.60

now you can use

 react-native start

OR

 npm start

both command is work