After pulling the project, make sure you install the "expo" package into the project folder by running the command below:
$npm install expo
After installing the "expo" package, you have to use the command below:
$expo start
After running the command, you will see a QR code. You must have the "Expo Go" app on your phone for the qr code to work. Scan it using your camera, and the project will open on your phone.