Rendering the PDF previews for https://test.wikipedia.org/wiki/File:18KOZ.pdf fails with (ExiftoolRunner) error: 'Warning: Skipped unknown 111 byte header and (ImagesHandler) Exception during _load_results, the latter having the trace
Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/wikimedia_thumbor/handler/images/images.py", line 577, in _load_results results, content_type = BaseHandler._load_results(self, context) File "/usr/lib/python2.7/dist-packages/thumbor/handlers/__init__.py", line 334, in _load_results results = context.request.engine.read(image_extension, quality) File "/usr/lib/python2.7/dist-packages/wikimedia_thumbor/engine/proxy/proxy.py", line 133, in read ret = self.__getattr__('read')(extension, quality) File "/usr/lib/python2.7/dist-packages/wikimedia_thumbor/engine/__init__.py", line 40, in read return super(BaseWikimediaEngine, self).read(extension, quality) File "/usr/lib/python2.7/dist-packages/wikimedia_thumbor/engine/imagemagick/imagemagick.py", line 323, in read raise ImageMagickException('Failed to convert image %s' % stderr) # pragma: no cover ImageMagickException: Failed to convert image convert: no decode delegate for this image format `' @ error/constitute.c/ReadImage/504. convert: no images defined `jpg:-' @ error/convert.c/ConvertImageCommand/3258.