React Native Debugger Not Working on iOS simulator or actual iPhone

I used npm init -g <project>. The app uses a blank template.

I started the app using npm start.

I open the debugger in the iOS simulator by hitting j. However, the app instantly loses connection. This same thing happens when I use expo go on my actual iPhone. Does anyone know what is causing this?

from React Native Debugger Not Working on iOS simulator or actual iPhone