advanced-react0native-biolerplate failed at launch

[emclab]

The example of advanced-react-native-boilerplate was cloned to macOS Catalina running Xcode 11.3.1 with its command line tool. Follow the How to use to launch it:

yarn react-native run-is

The simulator is iPhone 11 Pro Max. The error is about missing simulator:

yarn react-native run-ios
yarn run v1.19.2
$ /Users/zhouyiyun/Documents/js/advanced-react-native-boilerplate/node_modules/.bin/react-native run-ios
Found Xcode workspace TApp.xcworkspace

Could not find iPhone X simulator

Error: Could not find iPhone X simulator
at resolve (/Users/zhouyiyun/Documents/js/advanced-react-native-boilerplate/node_modules/react-native/local-cli/runIOS/runIOS.js:149:13)
at new Promise ()
at runOnSimulator (/Users/zhouyiyun/Documents/js/advanced-react-native-boilerplate/node_modules/react-native/local-cli/runIOS/runIOS.js:134:10)
at Object.runIOS [as func] (/Users/zhouyiyun/Documents/js/advanced-react-native-boilerplate/node_modules/react-native/local-cli/runIOS/runIOS.js:106:12)
at Promise.resolve.then (/Users/zhouyiyun/Documents/js/advanced-react-native-boilerplate/node_modules/react-native/local-cli/cliEntry.js:117:22)

error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

But there is no iPhone X simulator on my Mac.