Tabs: `key` is not a prop. Trying to access it will result in `undefined` being returned.?

I am getting this warning

Warning: Tabs: `key` is not a prop. Trying to access it will result in `undefined` being returned. If you need to access the same value within the child component, you should pass it 

I am already passing key in my component .don't know where I am doing wrong.

here is my code https://codesandbox.io/s/priceless-edison-g09nz?file=/src/App.js

<Tabs>
      {data.reduce((result, tabItem, tabIndex) => {
        result.push(<Tab {...getTabItemProps(tabItem, tabIndex)} key={tabIndex}/>);
        return result;
      }, [])}
    </Tabs>

Tabs.js

 <>
    <ul className="rc64nav" ref={tabsRef}>
      {tabsVisible.reduce((result, tabItem, tabIndex) => {
        result.push(tabItem);
        return result;
      }, [])}

    </ul>
    <ul>
    <hr/>
    <div>break</div>
      <hr/>
      {tabsHidden.reduce((result, tabItem, tabIndex) => {
        result.push(tabItem);
        return result;
      }, [])}
    </ul>
    </>

Tab.js

import React from "react";

const Tabs = ({ title,hidden }) => {
  return <li className={hidden ? 'hidden':'not-hidden'}>{title}</li>;
};

export default Tabs;