can`t not find setState()

import React, {Component} from 'react';
import ReactDOM from 'react-dom';
import YTsearch from 'youtube-api-search';

import About from './components/About';
import Search_bar from './components/search_bar';

const API_KEY ='blablabla';

class App extends React.Component {
    constructor(props){
        super(props);
        this.state = {videos: []}; 

        YTsearch({key: API_KEY, term:'hello'}, function(data){
            this.setState({videos: data}); 
            }
        );
    }

    render(){
        return (
                <div>
                    <About />
                    <Search_bar />
                </div>
            );
    }
}

ReactDOM.render(<App />, document.querySelector('.container'))

The wrong is in the line 15 you code would must this:

YTsearch({key: API_KEY, term:'hello'}, (data) => {