Cannot find file: 'hello.js' does not match the corresponding name on disk: '.\src\mycomponents\Hello.js'. code example

Example: Cannot find file: 'index.js' does not match the corresponding name on disk: '.\node_modules\React\react'.

import React from 'React'

should be

import React from 'react'

Module name is case-sensitive, Uppercase 'R' should be written in lowercase.