./src/pages/LogIn.js Module not found: Can't resolve 'reactjs-popup' in 'D:\React_Programs\user-admin\src\pages' code example

Example: module not found: can't resolve 'react' in 'c:\users\pavlos\desktop\reactjs\hwr\reactproject2\src'

type:  npm install react
next command type : npm install react-dom
that's the solution.