2016-09-09 00:48:36 [scrapy] ERROR: Error caught on signal handler: <bound method ?.item_scraped of <scrapy.extensions.feedexport.FeedExporter object at 0x7fc90004be10>>
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/twisted/internet/defer.py", line 149, in maybeDeferred
    result = f(*args, **kw)
  File "/usr/local/lib/python2.7/dist-packages/pydispatch/robustapply.py", line 55, in robustApply
    return receiver(*arguments, **named)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/extensions/feedexport.py", line 211, in item_scraped
    slot.exporter.export_item(item)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/exporters.py", line 113, in export_item
    itemdict = dict(self._get_serialized_fields(item))
  File "/usr/local/lib/python2.7/dist-packages/scrapy/exporters.py", line 75, in _get_serialized_fields
    value = self.serialize_field(field, field_name, item[field_name])
  File "/usr/local/lib/python2.7/dist-packages/scrapy/exporters.py", line 47, in serialize_field
    return serializer(value)
  File "/usr/local/lib/python2.7/dist-packages/scrapy/item.py", line 52, in __init__
    for k, v in six.iteritems(dict(*args, **kwargs)):
TypeError: 'Request' object is not iterable