The project can be run on the ios simulator and the project will crash on the real machine and prompt :
iPhone has denied the launch request.
Internal launch error: process launch failed: Unspecified

React Native version:
React Native Environment Info:
System:
OS: macOS 10.14.5
CPU: (4) x64 Intel(R) Core(TM) i5-6360U CPU @ 2.00GHz
Memory: 426.38 MB / 8.00 GB
Shell: 3.2.57 - /bin/bash
Binaries:
Node: 12.1.0 - /usr/local/bin/node
Yarn: 1.16.0 - /usr/local/bin/yarn
npm: 6.9.0 - /usr/local/bin/npm
Watchman: 4.9.0 - /usr/local/bin/watchman
SDKs:
iOS SDK:
Platforms: iOS 12.2, macOS 10.14, tvOS 12.2, watchOS 5.2
IDEs:
Xcode: 10.2.1/10E1001 - /usr/bin/xcodebuild
npmPackages:
react: 16.6.1 => 16.6.1
react-native: 0.57.7 => 0.57.7
npmGlobalPackages:
react-native-cli: 2.0.1
1.Open the ios project with xcode
2.Run the project on the ios real machine
Describe what you expected to happen:
The App should run without any crash or error.
App returns BUILD SUCCESS, but crashes without logging any error on start
Snack, code example, or link to a repository:
index.js
import './App/Config/ReactotronConfig'
import { AppRegistry } from 'react-native'
import App from './App/Containers/App'
AppRegistry.registerComponent('jhd4', () => App)
It looks like you are using an older version of React Native. Please update to the latest release, v0.59 and verify if the issue still exists.
react-native info on a project using the latest release.
I am closing this issue because it does not appear to have been verified on the latest release, and there has been no followup in a while.
If you found this thread after encountering the same issue in the latest release, please feel free to create a new issue with up-to-date information by clicking here.