Reactnative ReactionNativepdf文件不是PDF格式或已损坏

我可以打开链接:https://www.orimi.com/pdf-test.pdf，但当我try 使用链接:http://94.23.154.57:8081/digital-cert/download-file?id=33FB3234-23EC-472B-AB6F-76436DDCFA45&view=1时，我无法打开它.我收到一条错误消息:Error: cannot create document: File not in PDF format or corrupted.我怀疑可能是http导致了问题，但服务器返回了PDF链接，我无法将其更改为HTTPS

import Pdf from 'react-native-pdf';
import {
  View,
} from 'react-native';

const PDFExample = ({route}) => {
  const source = {
    uri: 'http://94.23.154.57:8081/digital-cert/download-file?id=33FB3234-23EC-472B-AB6F-76436DDCFA45&view=1',
    cache: true,
  };
  return (
      <View style={styles.container}>
        <Pdf
          trustAllCerts={false}
          source={source}
          onLoadComplete={(numberOfPages, filePath) => {
            console.log(`Number of pages: ${numberOfPages}`);
          }}
          onPageChanged={(page, numberOfPages) => {
            console.log(`Current page: ${page}`);
          }}
          onError={error => {
            console.log(error);
          }}
          onPressLink={uri => {
            console.log(`Link pressed: ${uri}`);
          }}
          style={styles.pdf}
        />
      </View>
)
}