ValueError: unknown barcode format:

[sentry-io]

What happens when products are deleted? It looks like an "update" event with an empty barcode is added to the stream, to be checked on staging.

Sentry Issue: ROBOTOFF-23J

ValueError: unknown barcode format: 
(4 additional frame(s) were not displayed)
...
  File "robotoff/models.py", line 35, in wrapper
    return fn(*args, **kwargs)
  File "robotoff/workers/tasks/product_updated.py", line 48, in update_insights_job
    delete_images(product_id, deleted_images)
  File "robotoff/images.py", line 209, in delete_images
    source_image = generate_image_path(product_id, image_id)
  File "robotoff/off.py", line 98, in generate_image_path
    return _generate_file_path(product_id, image_id, ".jpg")
  File "robotoff/off.py", line 84, in _generate_file_path
    splitted_barcode = split_barcode(product_id.barcode)