我不断收到来自SORL-缩略图奇怪的错误，在我的生产环境（使用哨兵作为记录器）。 他们都只是说Thumbnail tag failed: （这是哦，所以，尤伯杯有用），他们都来自三个模块之一。
奇怪的是，它实际上并不影响该网站。 网页加载罚款，甚至缩略图加载的罚款。 这真的只是一个问题，因为我已经厌倦了看到的错误，我在我的哨兵仪表板列表中显示出来的。 不过，我不能作出正面或反面出为什么会产生错误，或如何解决这些问题。 我开始怀疑，如果他们不只是标准的行为与过于详细日志记录混合，因为就像我说的，有在网站上没有明显的影响。
也许这里有人能摆脱它更多的光线，所以这里的踪迹。
更新＃1
对于从一个sorl.thumbnail.engines.pil_engine._orientation ，我发现了以下可能的候选人： http://blog.yawd.eu/2012/fix-sorlthumbnail-engines-pil-orientation-error/
从sorl.thumbnail.images.deserialize_image_file ：
Thumbnail tag failed:
Stacktrace (most recent call last):
File "sorl/thumbnail/templatetags/thumbnail.py", line 49, in render
logger.error('Thumbnail tag failed:', exc_info=sys.exc_info())
File "sorl/thumbnail/templatetags/thumbnail.py", line 97, in _render
file_, geometry, **options
File "sorl/thumbnail/base.py", line 65, in get_thumbnail
default.kvstore.get_or_set(source)
File "sorl/thumbnail/kvstores/base.py", line 46, in get_or_set
cached = self.get(image_file)
File "sorl/thumbnail/kvstores/base.py", line 25, in get
return self._get(image_file.key)
File "sorl/thumbnail/kvstores/base.py", line 127, in _get
return deserialize_image_file(value)
File "sorl/thumbnail/images.py", line 31, in deserialize_image_file
data = simplejson.loads(s)
File "simplejson/__init__.py", line 428, in loads
return _default_decoder.decode(s)
File "simplejson/decoder.py", line 402, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "simplejson/decoder.py", line 420, in raw_decode
raise JSONDecodeError("No JSON object could be decoded", s, idx)
从sorl.thumbnail.images.read ：
Thumbnail tag failed:
Stacktrace (most recent call last):
File "sorl/thumbnail/templatetags/thumbnail.py", line 49, in render
logger.error('Thumbnail tag failed:', exc_info=sys.exc_info())
File "sorl/thumbnail/templatetags/thumbnail.py", line 97, in _render
file_, geometry, **options
File "sorl/thumbnail/base.py", line 56, in get_thumbnail
source_image = default.engine.get_image(source)
File "sorl/thumbnail/engines/pil_engine.py", line 12, in get_image
buf = StringIO(source.read())
File "sorl/thumbnail/images.py", line 121, in read
return self.storage.open(self.name).read()
File "django/core/files/storage.py", line 33, in open
file = self._open(name, mode)
File "django/core/files/storage.py", line 159, in _open
return File(open(self.path(name), mode))
从sorl.thumbnail.engines.pil_engine._orientation ：
Thumbnail tag failed:
Stacktrace (most recent call last):
File "sorl/thumbnail/templatetags/thumbnail.py", line 49, in render
logger.error('Thumbnail tag failed:', exc_info=sys.exc_info())
File "sorl/thumbnail/templatetags/thumbnail.py", line 97, in _render
file_, geometry, **options
File "sorl/thumbnail/base.py", line 61, in get_thumbnail
thumbnail)
File "sorl/thumbnail/base.py", line 86, in _create_thumbnail
image = default.engine.create(source_image, geometry, options)
File "sorl/thumbnail/engines/base.py", line 15, in create
image = self.orientation(image, geometry, options)
File "sorl/thumbnail/engines/base.py", line 26, in orientation
return self._orientation(image)
File "sorl/thumbnail/engines/pil_engine.py", line 31, in _orientation
exif = None
File "PIL/JpegImagePlugin.py", line 381, in _getexif
info.load(file)
File "PIL/TiffImagePlugin.py", line 382, in load
raise IOError, "not enough data"
