404 Pdf analyze result does not exist when trying to receive Searchable PDF on large pdfs

I am constantly getting a 404 error when trying to access the searchable pdf after doing an analysis with prebuilt-read. this only happens with larger pdfs about 50 pages and up. also it will work once in a while on a large pdf but usually returns a 404 but if it is a small pdf it works every time. i have also tried adding a retry where it will try again after 30 seconds incase the problem was the pdf not being ready yet but that did not work.

Parsed error: { code: 'NotFound', message: 'Pdf analyze result does not exist.' }
Response status: 404
Response headers: Object [AxiosHeaders] {
  'content-length': '66',
  'content-type': 'application/json; charset=utf-8',
  'x-envoy-upstream-service-time': '3137',
  'apim-request-id': '6d044955-e6c2-4285-97ed-07989a557489',
  'strict-transport-security': 'max-age=31536000; includeSubDomains; preload',
  'x-content-type-options': 'nosniff',
  'x-ms-region': 'East US',
  date: 'Sun, 29 Sep 2024 19:38:50 GMT'
}

I dont think there is a problem with my code because i was not having this problem until recently and i have not changed the code.

    const pdfUrl = `${azureEndpoint}/documentintelligence/documentModels/prebuilt-read/analyzeResults/${resultId}/pdf?api-version=2024-07-31-preview`;
    console.log(`Requesting searchable PDF from Azure DI. Full URL: ${pdfUrl}`);

    const pdfResponse = await axios.get(
      `${azureEndpoint}/documentintelligence/documentModels/prebuilt-read/analyzeResults/${resultId}/pdf?api-version=2024-07-31-preview`,
      {
        headers: {
          'Ocp-Apim-Subscription-Key': azureKey,
          'Accept': 'application/pdf'
        },
        responseType: 'arraybuffer'
      }
    );

    // Convert the response data to a string if it's not a PDF
    const responseData = Buffer.from(pdfResponse.data);
    if (responseData.toString().startsWith('{')) {
      const errorMessage = JSON.parse(responseData.toString());
      console.error('Error retrieving searchable PDF:', errorMessage);
      throw new Error(`Failed to retrieve searchable PDF: ${errorMessage.message}`);
    }

    const searchablePdfBuffer = Buffer.from(pdfResponse.data, 'binary');

    await fs.writeFile(outputPdfPath, searchablePdfBuffer);
    console.log(`Searchable PDF saved at ${outputPdfPath}`);