Paypal Checkout服务器集成问题

Question

我尝试将Paypal实现到现有应用程序中，但是必须从我们的后端进行对Paypal API的调用。我坚持在React中设置客户端，更确切地说是在加载脚本。

我正在使用的代码：

import ReactDOM from 'react-dom';
import scriptLoader from 'react-async-script-loader';

class PaypalButton extends React.Component {
    constructor(props) {
        super(props);
        this.state = {
            showButton: false,
        };
        window.React = React;
        window.ReactDOM = ReactDOM;
    }
    componentDidMount() {
        const {
            isScriptLoaded,
            isScriptLoadSucceed
        } = this.props;
        if (isScriptLoaded && isScriptLoadSucceed) {
            this.setState({ showButton: true });
        }
    }
    componentWillReceiveProps({ isScriptLoaded, isScriptLoadSucceed }) {
        if (!this.state.show) {
            if (isScriptLoaded && !this.props.isScriptLoaded) { // load finished
                if (isScriptLoadSucceed) {
                    this.setState({ showButton: true })
                    console.log('alehop!!', window.paypal.Button.react)
                }
                else this.props.onError()
            }
        }
    }


    render() {

        const paypal = window.PAYPAL
        const {
            total,
            currency,
            env,
            commit,
            client,
            onSuccess,
            onError,
            onCancel,
        } = this.props;

        const {
            showButton,
        } = this.state;

        const payment = () =>
            paypal.rest.payment.create(env, client, {
                transactions: [
                    {
                        amount: {
                            total,
                            currency,
                        }
                    },
                ],
            });

        const onAuthorize = (data, actions) =>
            actions.payment.execute()
                .then(() => {
                    const payment = {
                        paid: true,
                        cancelled: false,
                        payerID: data.payerID,
                        paymentID: data.paymentID,
                        paymentToken: data.paymentToken,
                        returnUrl: data.returnUrl,
                    };
                    onSuccess(payment);
                });
        return (
            <div>
                {showButton && <paypal.Button.react
                    env={env}
                    client={client}
                    commit={commit}
                    payment={payment}
                    onAuthorize={onAuthorize}
                    onCancel={onCancel}
                    onError={onError}
                />}
            </div>
        );
    }
}
export default scriptLoader('https://www.paypalobjects.com/api/checkout.js')(PaypalButton);

即时通讯错误为Erroneous payment OR failed to load script! Error: Client ID not found for env: sandbox
客户端ID是有效的，我多次检查了它，即时通讯卡住了。我遵循了PayPal网站上的实施指南，但有Vanilla JS示例。任何帮助将不胜感激！