类型错误：date.locale 不是函数-PHP中文网问答

我使用 antd "antd": "^5.5.1" DatePicker 来绑定日期字符串，这是 App.tsx 代码如下：

import { DatePicker, Form } from "antd";
import React from "react";
import { useState } from "react";

export interface EduModel {
  admission: String;
}

const App: React.FC = () => {

  const [edu, setEdu] = useState();

  const onFinish = (values: any) => {

  };

  React.useEffect(() => {
    let edu1: EduModel = {
      admission: '1995-09-01'
    };
    setEdu(edu1);
  }, []);

  const onFinishFailed = (errorInfo: any) => {

  };

  const [form] = Form.useForm();

  React.useEffect(() => {
    form.setFieldsValue(edu)
  }, [form, edu]);

  return (
    
      
        
          
        
      
    
  );
}

export default App;

当我运行这个简单的页面时，显示错误：

dayjs.js:185 Uncaught TypeError: date.locale is not a function
    at Object.format (dayjs.js:185:1)
    at formatValue (dateUtil.js:104:1)
    at useValueTexts.js:18:1
    at useMemo (useMemo.js:5:1)
    at useValueTexts (useValueTexts.js:8:1)
    at InnerPicker (Picker.js:150:1)
    at renderWithHooks (react-dom.development.js:16305:1)
    at updateFunctionComponent (react-dom.development.js:19588:1)
    at beginWork (react-dom.development.js:21601:1)
    at beginWork$1 (react-dom.development.js:27426:1)

我尝试添加 DatePicker 字符串格式，但仍然无法解决此问题。我错过了什么吗？我应该怎么做才能让它发挥作用？