Issues as like
manifest.json:1 Manifest: Line: 1, column: 1, Syntax error.
**More Vital Issue/User Msg:**
react-dom.development.js:20085 The above error occurred in the <WithStyles(ForwardRef(AppBar))> component:
Folder Structure React Folder Structure
Functional components are different from classes When you use functional components (functions) you can use all the react hooks except lifecycle hooks like componentDidMount While in class components you can use life cycle hooks but not other react hooks like(useState())
In other to use the react hooks change your class components to a functional one