React Native - AsyncStorage is null

I got these errores when I was adding AsyncStorage dependencies (https://github.com/react-native-community/async-storage)

I was using React Native CLI, not expo, I had ran 'react-native link @react-native-community/async-storage' in the project root.

My problem was when i ran '--clearCache' flag, maybe that was my problem, I don't know. If you know how to run the flag '--clearCache' please help me.