Error.js

class Availability extends React.Component {
    constructor(props) {
        super(props);
        this.state = {
            calendar: null
        };
    }
    componentDidMount() {
        setTimeout(() => {
            this.setState({
                calendar: (<BookingCalendar bookings={[]} disableHistory={true} />)
            });
        }, 2500);
    }

    render() {
        return (
            <Container>
                <Row className="justify-content-center">
                    <Col md="6" sm="12" className="calendar">
                        {this.state.calendar}
                    </Col>
                </Row>
            </Container>
        )
    }
};