Render a Class Component to the DOM - Error

When I run this code, a error is appear: Minified React error #200; visit for the full message or use the non-minified dev environment for full errors and additional helpful warnings. I didn’t understand this error. I am a newbie. Please help me. Thank you very much.

This is your code:

class TypesOfFood extends React.Component {
  constructor(props) {
  render() {
    return (
        <h1>Types of Food:</h1>
        {/* change code below this line */}
            <Fruits />
            <Vegetables />
        {/* change code above this line */}
ReactDOM.render(<TypesOfFood />, 'challenge-node');
// change code below this line

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.100 Safari/537.36.

Link to the challenge:

The second argument for ReactDOM.render is an actual DOM node (like the value you get when calling document.getElementById), not just a string