I followed the instruction on trying to run the demo code. However, encountered the error as per screenshot below:

Steps
$ git clone https://github.com/HyphenateInc/hyphenate-react-native.git
$ cd hyphenate-react-native
$ npm install
$ react-native run-ios
Environment
- Xcode 9 / Simulator iOS 11.0
- npm 5.4.2