I can not start the project

[sorokin-as]

My steps

1. yarn add react-native-simple-maps
   cd ios && pod install && cd ..

2. I copy the code from the example
   https://github.com/ahushh/react-native-simple-maps/blob/master/examples/react-native.jsx
   The system asks to install svg

3. yarn add react-native-svg
   cd ios && pod install && cd ..

4. npx react-native run-ios

What do I need to do to start a project?