Hi, I can not run my app on ios simulator using react-native-firestack. Here are the steps I followed.

1. Created a project with create-react-native-app
2. Installed react-native-firestack with npm i react-native-firestack
3. ejected the project by running npm run eject
4. linked to react-native-firestack by running react-native link react-native-firestack
5. cd appname && pod update

After completing all the steps I run my project with react-native run-ios
It started and I got the my initial page. After this step I have imported the module using 'import firestack from 'react-native-firestack'

Now If I run the project I am getting error Native module cannot be null

Dependencies from package.json:
firebase: "^4,6.1"
react: "16.0.0"
react-native: "^0.49.5"
react-native-firestack:"^2.3.9"

Simulator
iphone 7 - iOS 10.0 (14A345)

My Podfiel file
2017年11月03日 16_58_54-192 168 25 134 - remote desktop connection

My simulator screen
2017年11月03日 16_59_19-192 168 25 134 - remote desktop connection

Am I missing anything. I followed the documentation exactly.