Module not found: Can't resolve 'react-router-dom' in 'E:\Office Work\React Work\Login-Signup\my-app\src\Router' 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