PropTypes to Define to isRequired

Tell us what’s happening:
Output throws an error that say cannot read isRequired.

Your code so far

const Items = (props) => {
  return <h1>Current Quantity of: {props.quantity}</h1>

// change code below this line
Items.propTypes = { quantity: PropTypes.func.isRequired };
// change code above this line

Items.defaultProps = {
  quantity: 0

class ShoppingCart extends React.Component {
  constructor(props) {
  render() {
    return <Items />

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36.

Link to the challenge:

Try reading the instructions again.

Define propTypes for the Items component to require quantity as a prop and verify that it is of type number

It’s not a function.
It’s a number.

Hi, Didn’t catch the error. Thanks for pointing it out!