Module not found: Can't resolve 'react-router-dom' in '/Users/kevinluu/workspace/guppy-sellers/guppy-sellers-fe/src' code example

Example 1: Module not found: Can't resolve 'react-router-dom'

npm install react-router-dom --save

Example 2: Module not found: Can't resolve 'react-router-dom'

npm i react-router-dom --save