“Warning: react-modal: App element is not defined. Please use `Modal.setAppElement(el)` or set `appElement={el}`”

Question

How to fix this warning in console of a React app using the react-modal package:

Warning: react-modal: App element is not defined. Please use Moda

Answer 1

Just include appElement={document.getElementById('app')} inside your modal like this

It will work 100% if app is your central in index.html from where react loads.