Can't resolve 'React'

[jrichardsz]

Steps

• clone repository
• npm install
• npm run start

Expected result

Material ui web must be accessible from browser

Current result

Error in npm run start result:

ERROR in ./src/components/ContactPage.js
Module not found: Error: Can't resolve 'React' in '.../src/components'
 @ ./src/components/ContactPage.js 10:13-29
 @ ./src/routers/AppRouter.js
 @ ./src/app.js
 @ multi (webpack)-dev-server/client?http://localhost:8080 ./src/app.js

ERROR in ./src/components/LoginPage.js
Module not found: Error: Can't resolve 'React' in '.../src/components'
 @ ./src/components/LoginPage.js 10:13-29
 @ ./src/routers/AppRouter.js
 @ ./src/app.js
 @ multi (webpack)-dev-server/client?http://localhost:8080 ./src/app.js

ERROR in ./src/components/ProductsPage.js
Module not found: Error: Can't resolve 'React' in '.../src/components'
 @ ./src/components/ProductsPage.js 9:13-29
 @ ./src/routers/AppRouter.js
 @ ./src/app.js
 @ multi (webpack)-dev-server/client?http://localhost:8080 ./src/app.js

ERROR in ./src/components/FormsPage.js
Module not found: Error: Can't resolve 'React' in '.../src/components'
 @ ./src/components/FormsPage.js 10:13-29
 @ ./src/routers/AppRouter.js
 @ ./src/app.js
 @ multi (webpack)-dev-server/client?http://localhost:8080 ./src/app.js

Environment

• ubuntu 18
• nodejs : v8.11.2

Thanks 4 your time!