./src/App.js Module not found: Can't resolve 'jquery' in 'C:\Users\Sharif Zaman\Desktop\react-portfolio\my-app\src' 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.