ZeroDivisionError when thumbnail is passed a 0x0 SVG

[gonzalodelgado]

Hi there, I'm getting a ZeroDivisionError when uploading an SVG using django-filer. The error is coming from easy_thumbnails' scale_and_crop processor, when computing the scale:

Traceback (most recent call last):
  File "[virtualenv-path]/lib/python3.8/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "[virtualenv-path]/lib/python3.8/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "[virtualenv-path]/lib/python3.8/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "[virtualenv-path]/lib/python3.8/site-packages/filer/admin/clipboardadmin.py", line 132, in ajax_upload
    thumbnail_180 = file_obj.file.get_thumbnail(
  File "[virtualenv-path]/lib/python3.8/site-packages/easy_thumbnails/files.py", line 508, in get_thumbnail
    thumbnail = self.generate_thumbnail(
  File "[virtualenv-path]/lib/python3.8/site-packages/easy_thumbnails/files.py", line 389, in generate_thumbnail
    thumbnail_image = engine.process_image(image, thumbnail_options,
  File "[virtualenv-path]/lib/python3.8/site-packages/easy_thumbnails/engine.py", line 35, in process_image
    image = processor(image, **processor_options)
  File "[virtualenv-path]/lib/python3.8/site-packages/filer/thumbnail_processors.py", line 52, in scale_and_crop_with_subject_location
    return processors.scale_and_crop(im, size, zoom=zoom, crop=crop,
  File "[virtualenv-path]/lib/python3.8/site-packages/easy_thumbnails/processors.py", line 177, in scale_and_crop
    scale = max(target_x / source_x, target_y / source_y)
ZeroDivisionError: float division by zero

[jrief]

Thanks for reporting.