“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

The shortest solution is to add appElement={document.getElementById("hereIsYourRootElementId")} It lets react-modal know where is your root element. It is not required, but recommended.