I have already installed this dependancy, here you can see: Following image contains the dependancy section and also error

CodePudding user response：

This error occurs because you haven't installed react-navigation.

Run:

npm install react-navigation
npm run start --reset-cache

CodePudding user response：

If you are using an iOS emulator for development. It could be because the necessary pods have not been installed You could try

cd ios && pod install