I have to create a tree view in react js as i mentioned above i am using this library but can't add a child node in that please help me out https://ant.design/components/tree/

I have to create like this https://www.grapecity.com/wijmo/demos/Nav/TreeView/Nodes/Adding/react

code link https://codesandbox.io/s/clever-zhukovsky-9v77i?file=/src/App.js