I just took my first steps with expo-react , after installing "réact-navigation" if I try to run the project with "npm start", voilà ce que j'ai trouvé **unable unable to find expo in this project - have you run yarn /npm install yet

CodePudding user response：

You will need to first check if there is an expo npm package in the package.json file.

CodePudding user response：

Run "npm install" first.