Problem with turning a ocr document into pdf using

Hi!  I am trying to test out turning an OCR document into a searchable PDF.  This works fine when I use the online tool with the same PDF.  I am trying to get it to work using the PDF Services API.  The end result is I get an empty zip file.  I think I have used the sample code verbatim with the exception of replacing my keys plus an outside method passes in the file location instead of hard coding it to

As a side note, I have tested another method that extracts text out of a PDF to test that and it works, I just can't seem to use the OCR job.   I mention that because it is not the file locations input or output that I can see.  Below is my code.  Any suggestions on where I can check or what I might be doing wrong.  Logging in the API itself?  Other suggestions?  Many thanks in advance!

async ocrIntoPDF(filePath: string) {

let readStream;
try {
// Initial setup, create credentials instance
const credentials = new ServicePrincipalCredentials({
clientId: "xxxxx",
clientSecret: "yyyyy"
});

// Creates a PDF Services instance
const pdfServices = new PDFServices({credentials});

// Creates an asset(s) from source file(s) and upload
readStream = fs.createReadStream(filePath);
const inputAsset = await pdfServices.upload({
readStream,
mimeType: MimeType.PDF
});

// Create parameters for the job
const params = new OCRParams({
ocrLocale: OCRSupportedLocale.EN_US,
ocrType: OCRSupportedType.SEARCHABLE_IMAGE_EXACT
});

// Creates a new job instance
const job = new OCRJob({inputAsset, params});

// Submit the job and get the job result
const pollingURL = await pdfServices.submit({job});
const pdfServicesResponse = await pdfServices.getJobResult({
pollingURL,
resultType: OCRResult
});

// Get content from the resulting asset(s)
const resultAsset = pdfServicesResponse.result.asset;
const streamAsset = await pdfServices.getContent({asset: resultAsset});

// Creates a write stream and copy stream asset's content to it
const outputFilePath = this.createOutputFilePath();
console.log(`Saving asset at ${outputFilePath}`);

const writeStream = fs.createWriteStream(outputFilePath);
streamAsset.readStream.pipe(writeStream);
} catch (err) {
if (err instanceof SDKError || err instanceof ServiceUsageError || err instanceof ServiceApiError) {
console.log("Exception encountered while executing operation", err);
} else {
console.log("Exception encountered while executing operation", err);
}
} finally {
readStream?.destroy();
}

};