如果未更改默认值，则antd表单项验证失败

import React from 'react';
import { Form, Input, Button } from 'antd';

const MyForm = () => {
  const onFinish = (values) => {
    console.log('Received values of form: ', values);
  };

  return (
    <Form onFinish={onFinish}>
      <Form.Item
        label="Username"
        name="username"
        rules={[{ required: true, message: 'Please input your username!' }]}
      >
        <Input />
      </Form.Item>

      <Form.Item
        label="Email"
        name="email"
        rules={[
          { required: true, message: 'Please input your email!' },
          { type: 'email', message: 'The input is not a valid email!' },
        ]}
      >
        <Input />
      </Form.Item>

      <Form.Item>
        <Button type="primary" htmlType="submit">
          Submit
        </Button>
      </Form.Item>
    </Form>
  );
};

export default MyForm;