오류 질문 드립니다...

안녕하세요 

강의 듣고 해봤는데 아무리 찾아도 

어디서 오류가 난건지 모르겠어서 질문 드립니다 ㅠㅠ

결과값 '땡'은 잘 나타나는데 '정답'일때만 이런 오류가 발생합니다.

<html>
<head>
    <meta charset="UTF-8" />
    <title>구구단</title>
    <script crossorigin src="https://unpkg.com/react@16/umd/react.development.js"></script>
    <script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
    <script src="https://unpkg.com/babel-standalone@6/babel.min.js"></script>
</head>
<body>
    <div id="root"></div>
    <script type="text/babel">
        class GuGuDan extends React.Component {
            constructor(props) {
                super(props);
                this.state = {
                    first: Math.ceil(Math.random() * 9),
                    second: Math.ceil(Math.random() * 9),
                    value: '',
                    result: ''
                }; // 변하는 값 - State
            }

            onSubmit = (e) => {
                e.preventDefault();
                if (parseInt(this.state.value) === this.state.first * this.state.second) {
                    this.setSate({
                        result: '정답',
                        first: Math.ceil(Math.random() * 9),
                        second: Math.ceil(Math.random() * 9),
                        value: '',
                    });
                } else {
                    this.setState({
                        result: '땡',
                        value: '',
                    });
                }
            };

            onChange = (e) => {
                this.setState({value: e.target.value});
            };

            render() {
                return (
                    <div>
                        <div>{this.state.first} 곱하기 {this.state.second}는?</div>
                        <form onSubmit={this.onSubmit}>
                            <input type="number" value={this.state.value} onChange={this.onChange} />
                            <button>입력!</button>    
                        </form>
                        <div>{this.state.result}</div>
                    </div>
                );
            }
        }
    </script>
    <script type="text/babel">
        ReactDOM.render(<GuGuDan />, document.querySelector('#root'))
    </script>
</body>
</html>

인프런 커뮤니티 질문&답변