Traceback (most recent call last):
  File "/Users/remidelbouys/Envinorma/data-tasks/tasks/ocr_ap/ocr_ap.py", line 818, in _run_ocr
    _download_ocr_and_upload_document(id_)
  File "/Users/remidelbouys/Envinorma/data-tasks/tasks/ocr_ap/ocr_ap.py", line 81, in _download_ocr_and_upload_document
    _ocr(file_.name, file_.name)
  File "/Users/remidelbouys/Envinorma/data-tasks/tasks/ocr_ap/ocr_ap.py", line 61, in _ocr
    ocr(input_filename, output_filename, language=['fra'], progress_bar=False, jobs=1)  # type: ignore
  File "/Users/remidelbouys/Envinorma/data-tasks/venv/lib/python3.9/site-packages/ocrmypdf/api.py", line 340, in ocr
    return run_pipeline(options=options, plugin_manager=plugin_manager, api=True)
  File "/Users/remidelbouys/Envinorma/data-tasks/venv/lib/python3.9/site-packages/ocrmypdf/_sync.py", line 359, in run_pipeline
    pdfinfo = get_pdfinfo(
  File "/Users/remidelbouys/Envinorma/data-tasks/venv/lib/python3.9/site-packages/ocrmypdf/_pipeline.py", line 157, in get_pdfinfo
    return PdfInfo(
  File "/Users/remidelbouys/Envinorma/data-tasks/venv/lib/python3.9/site-packages/ocrmypdf/pdfinfo/info.py", line 860, in __init__
    self._pages = _pdf_pageinfo_concurrent(
  File "/Users/remidelbouys/Envinorma/data-tasks/venv/lib/python3.9/site-packages/ocrmypdf/pdfinfo/info.py", line 644, in _pdf_pageinfo_concurrent
    executor(
  File "/Users/remidelbouys/Envinorma/data-tasks/venv/lib/python3.9/site-packages/ocrmypdf/_concurrent.py", line 82, in __call__
    self._execute(
  File "/Users/remidelbouys/Envinorma/data-tasks/venv/lib/python3.9/site-packages/ocrmypdf/builtin_plugins/concurrency.py", line 132, in _execute
    for result in results:
  File "/usr/local/Cellar/python@3.9/3.9.5/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/pool.py", line 870, in next
    raise value
  File "/usr/local/Cellar/python@3.9/3.9.5/Frameworks/Python.framework/Versions/3.9/lib/python3.9/multiprocessing/pool.py", line 125, in worker
    result = (True, func(*args, **kwds))
  File "/Users/remidelbouys/Envinorma/data-tasks/venv/lib/python3.9/site-packages/ocrmypdf/pdfinfo/info.py", line 601, in _pdf_pageinfo_sync
    page = PageInfo(pdf, pageno, infile, check_pages, detailed_analysis)
  File "/Users/remidelbouys/Envinorma/data-tasks/venv/lib/python3.9/site-packages/ocrmypdf/pdfinfo/info.py", line 675, in __init__
    self._gather_pageinfo(pdf, pageno, infile, check_pages, detailed_analysis)
  File "/Users/remidelbouys/Envinorma/data-tasks/venv/lib/python3.9/site-packages/ocrmypdf/pdfinfo/info.py", line 721, in _gather_pageinfo
    for ci in _process_content_streams(
  File "/Users/remidelbouys/Envinorma/data-tasks/venv/lib/python3.9/site-packages/ocrmypdf/pdfinfo/info.py", line 528, in _process_content_streams
    yield from _find_regular_images(container, contentsinfo)
  File "/Users/remidelbouys/Envinorma/data-tasks/venv/lib/python3.9/site-packages/ocrmypdf/pdfinfo/info.py", line 434, in _find_regular_images
    for pdfimage, xobj in _image_xobjects(container):
  File "/Users/remidelbouys/Envinorma/data-tasks/venv/lib/python3.9/site-packages/ocrmypdf/pdfinfo/info.py", line 416, in _image_xobjects
    if not '/Subtype' in candidate:
TypeError: argument of type 'NoneType' is not iterable