Typing into input widget causes TypeError

Tell us what’s happening:
For the subject React challenge, I’m suppose to render a text input widget to permit a user to enter text. With whatever text is entered into the the widget, it is then suppose to render on the page .

All of the tests pass, but when I type characters into the text input widget the following error is raised: TypeError: event.target is null.

What is causing this to occur?

Your code so far

class ControlledInput extends React.Component {
constructor(props) {
  this.state = {
    input: ''
  // change code below this line
  this.handleChange = this.handleChange.bind(this);
  // change code above this line
// change code below this line
handleChange(event) {
  this.setState((state) => ({
    input : event.target.value
// change code above this line
render() {
  return (
      { /* change code below this line */}
      <input type="text" value={this.state.input} onChange={this.handleChange}/>
      { /* change code above this line */}
      <h4>Controlled Input:</h4>

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Firefox/78.0.

Challenge: Create a Controlled Input

Link to the challenge:

Read about Syntetic Events in React: https://reactjs.org/docs/events.html

TLDR: Save value into a separate variable before using it in setState or use event.persist().