react-pdf从磁盘加载文件，但不加载url

import React from 'react';
import { Document, Page, BlobProvider } from 'react-pdf';

class PDFViewer extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      file: null,
    };
  }

  componentDidMount() {
    // 从磁盘加载文件
    const file = require('./path/to/pdf/file.pdf');
    this.setState({ file });
  }

  render() {
    const { file } = this.state;

    return (
      <div>
        {file && (
          <BlobProvider document={file}>
            {({ blob, url, loading, error }) => (
              <div>
                {loading && <div>Loading PDF...</div>}
                {error && <div>Error loading PDF!</div>}
                {url && <Page pageNumber={1} width={400} />}
              </div>
            )}
          </BlobProvider>
        )}
      </div>
    );
  }
}

export default PDFViewer;