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To solve the error: 'react-scripts' is not recognized as an internal or external command”, make sure the react-scripts npm package was installed in the project.
The React error 'Switch' is not exported from 'react-router-dom' occurs when we import 'Switch' from react-router-dom v6. In v6, ‘Switch’ was replaced by ‘Routes’
The "Adjacent JSX elements must be wrapped in an enclosing tag" error can be solved by wrapping the multiple elements in a parent div or in a react fragment
To call multiple functions onClick in React, pass an event handler function into the onClick prop of the element that can call as many other functions as necessary.
Check why the warning “Can't perform a react state update on an unmounted component” occurred and how to solve it using a flag in useEffect hook.
Error “Can't set headers after they are sent to the client” occurs when an express.js application tries to send multiple responses for a single request.
The TypeError: Cannot read property of undefined occurs when we try to read a property on an undefined variable or when we try to access a property on a DOM element that doesn't exist.