React-native screen does not appear on the iOS simulator using react-native

I am now trying to develop an application with react-native, but the first project does not work well.

Environment

• cocoapods-1.9.3
• node v10.16.2
• watchman 4.9.0
• Apple Swift version 5.2.4 (swiftlang-1103.0.32.9 clang-1103.0.32.53)Target: x86_64-apple-darwin19.4.0

What I've tried

I did environment setup according to the official cite.

$ npx react-native init AwesomeProject$ cd AwesomeProject$ npx react-native run-ios

And I see the iOS screen, but there is no statement like "Welcome to react-native", which should be appeard on the screen.What I can see on the simulator is this.

When I execute the command

$ npx react-native start

I can see the react-native logo like this,

               ######                ######                            ###     ####        ####     ###                         ##          ###    ###          ##                        ##             ####             ##                        ##             ####             ##                        ##           ##    ##           ##                        ##         ###      ###         ##                         ##  ########################  ##                       ######    ###            ###    ######                ###     ##    ##              ##    ##     ###         ###         ## ###      ####      ### ##         ###     ##           ####      ########      ####           ##   ##             ###     ##########     ###             ##   ##           ####      ########      ####           ##     ###         ## ###      ####      ### ##         ###         ###     ##    ##              ##    ##     ###                ######    ###            ###    ######                       ##  ########################  ##                         ##         ###      ###         ##                        ##           ##    ##           ##                        ##             ####             ##                        ##             ####             ##                        ##          ###    ###          ##                         ###     ####        ####     ###                            ######                ######                                Welcome to React Native!                Learn once, write anywhereTo reload the app press "r"To open developer menu press "d"

but under there is a warning statement.

warn No apps connected. Sending "reload" to all React Native apps failed. Make sure your app is running in the simulator or on a phone connected via USB.info Reloading app...

How can I get the simulator screen like this picture which is shown as a success result?