Exception while trying to run the python script

Issue in /src/pages/overview/pdf-accessibility-auto-tag-api/quickstarts.md

INFO:adobe.pdfservices.operation.pdfops.autotag_pdf_operation:All validations successfully done. Beginning AutotagPDF operation execution
Traceback (most recent call last):
File "C:\Users\...i\Downloads\PDFServicesSDK-Python (Extract, Auto-tag)Samples\adobe-dc-pdf-services-sdk-python-samples\src\autotagpdf\autotag_pdf.py", line 45, in
autotag_output_files: AutotagPDFOutputFiles = autotag_pdf_operation.execute(execution_context)
File "C:\Python39\lib\site-packages\adobe\pdfservices\operation\pdfops\autotag_pdf_operation.py", line 177, in execute
raise ex
File "C:\Python39\lib\site-packages\adobe\pdfservices\operation\pdfops\autotag_pdf_operation.py", line 153, in execute
download_uri_list = AutotagPDFService.autotag_pdf(execution_context, self._source_file_ref, self.get_options(),
File "C:\Python39\lib\site-packages\adobe\pdfservices\operation\internal\service\autotag_pdf_service.py", line 51, in autotag_pdf
raise e
File "C:\Python39\lib\site-packages\adobe\pdfservices\operation\internal\service\autotag_pdf_service.py", line 35, in autotag_pdf
location = PlatformApi.submit_job(context, autotag_pdf_request, ServiceConstants.AUTOTAG_OPERATION_ENDPOINT,
File "C:\Python39\lib\site-packages\adobe\pdfservices\operation\internal\api\platform_api.py", line 51, in submit_job
response = http_client.process_request(http_request=http_request,
File "C:\Python39\lib\site-packages\adobe\pdfservices\operation\internal\http\http_client.py", line 46, in process_request
raise OperationException(message=response.text,
adobe.pdfservices.operation.internal.exceptions.OperationException

Start with src/pages/overview/pdf-accessibility-auto-tag-api/quickstarts.md and reproduce the failure by running src/autotagpdf/autotag_pdf.py. Inspect the complete OperationException response from the AutotagPDF operation, since the report includes only the exception type. Done means the quickstart script completes the AutotagPDF execution without this exception.

Written by the indexing model from the issue text.