multiprocessing.pool.RemoteTraceback: 
"""
Traceback (most recent call last):
  File "/usr/local/lib/python3.9/site-packages/ocrmypdf/_exec/tesseract.py", line 332, in generate_pdf
    p = run(args_tesseract, stdout=PIPE, stderr=STDOUT, timeout=timeout, check=True)
  File "/usr/local/lib/python3.9/site-packages/ocrmypdf/subprocess/__init__.py", line 51, in run
    proc = subprocess_run(args, env=env, **kwargs)
  File "/usr/local/lib/python3.9/subprocess.py", line 528, in run
    raise CalledProcessError(retcode, process.args,
subprocess.CalledProcessError: Command '['tesseract', '-l', 'fra', '-c', 'textonly_pdf=1', '/tmp/ocrmypdf.io.nuigw33a/000007_ocr.png', '/tmp/ocrmypdf.io.nuigw33a/000007_ocr_tess', 'pdf', 'txt']' died with <Signals.SIGKILL: 9>.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/local/lib/python3.9/multiprocessing/pool.py", line 125, in worker
    result = (True, func(*args, **kwds))
  File "/usr/local/lib/python3.9/site-packages/ocrmypdf/_sync.py", line 213, in exec_page_sync
    (ocr_out, text_out) = ocr_engine_textonly_pdf(ocr_image_out, page_context)
  File "/usr/local/lib/python3.9/site-packages/ocrmypdf/_pipeline.py", line 651, in ocr_engine_textonly_pdf
    ocr_engine.generate_pdf(
  File "/usr/local/lib/python3.9/site-packages/ocrmypdf/builtin_plugins/tesseract_ocr.py", line 163, in generate_pdf
    tesseract.generate_pdf(
  File "/usr/local/lib/python3.9/site-packages/ocrmypdf/_exec/tesseract.py", line 344, in generate_pdf
    raise SubprocessOutputError() from e
ocrmypdf.exceptions.SubprocessOutputError
"""

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/src/app/tasks/ocr_ap/ocr_ap.py", line 182, in _run_ocr
    _download_ocr_and_upload_document(id_)
  File "/usr/src/app/tasks/ocr_ap/ocr_ap.py", line 61, in _download_ocr_and_upload_document
    _ocr(file_.name, file_.name)
  File "/usr/src/app/tasks/ocr_ap/ocr_ap.py", line 41, in _ocr
    ocr(input_filename, output_filename, language=['fra'], progress_bar=False, jobs=1)  # type: ignore
  File "/usr/local/lib/python3.9/site-packages/ocrmypdf/api.py", line 340, in ocr
    return run_pipeline(options=options, plugin_manager=plugin_manager, api=True)
  File "/usr/local/lib/python3.9/site-packages/ocrmypdf/_sync.py", line 374, in run_pipeline
    exec_concurrent(context, executor)
  File "/usr/local/lib/python3.9/site-packages/ocrmypdf/_sync.py", line 271, in exec_concurrent
    executor(
  File "/usr/local/lib/python3.9/site-packages/ocrmypdf/_concurrent.py", line 82, in __call__
    self._execute(
  File "/usr/local/lib/python3.9/site-packages/ocrmypdf/builtin_plugins/concurrency.py", line 134, in _execute
    for result in results:
  File "/usr/local/lib/python3.9/multiprocessing/pool.py", line 870, in next
    raise value
ocrmypdf.exceptions.SubprocessOutputError