2018-11-29 06:25:35,337 WARNING revscoring.scoring.environment: Differences between the current environment and the environment in which the model was constructed environment were detected:
 - python_build ('default', 'Jan 19 2017 14:11:04') mismatch with original environment ('default', 'Sep 27 2018 17:25:39')
 - python_compiler 'GCC 6.3.0 20170118' mismatch with original environment 'GCC 6.3.0 20170516'
 - release '4.9.0-6-amd64' mismatch with original environment '4.9.0-8-amd64'
 - revscoring_version '2.2.5' mismatch with original environment '2.2.6'
 - version '#1 SMP Debian 4.9.82-1+deb9u3 (2018-03-02)' mismatch with original environment '#1 SMP Debian 4.9.110-3+deb9u4 (2018-08-21)'
 - platform 'Linux-4.9.0-6-amd64-x86_64-with-debian-9.4' mismatch with original environment 'Linux-4.9.0-8-amd64-x86_64-with-debian-9.5'
2018-11-29 06:25:35,721 ERROR ores.wsgi.responses: Traceback (most recent call last):
  File "/srv/deployment/ores/deploy/venv/lib/python3.5/site-packages/kombu/serialization.py", line 50, in _reraise_errors
    yield
  File "/srv/deployment/ores/deploy/venv/lib/python3.5/site-packages/kombu/serialization.py", line 221, in dumps
    payload = encoder(data)
  File "/srv/deployment/ores/deploy/venv/lib/python3.5/site-packages/kombu/utils/json.py", line 69, in dumps
    **dict(default_kwargs, **kwargs))
  File "/usr/lib/python3.5/json/__init__.py", line 237, in dumps
    **kw).encode(obj)
  File "/usr/lib/python3.5/json/encoder.py", line 198, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/usr/lib/python3.5/json/encoder.py", line 256, in iterencode
    return _iterencode(o, 0)
  File "/srv/deployment/ores/deploy/venv/lib/python3.5/site-packages/kombu/utils/json.py", line 59, in default
    return super(JSONEncoder, self).default(o)
  File "/usr/lib/python3.5/json/encoder.py", line 179, in default
    raise TypeError(repr(o) + " is not JSON serializable")
TypeError: frozenset({'itemquality'}) is not JSON serializable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "./ores/wsgi/routes/v3/util.py", line 101, in process_score_request
    score_response = scoring_system.score(score_request)
  File "./ores/scoring_systems/scoring_system.py", line 59, in score
    response = self._score(request)
  File "./ores/scoring_systems/celery_queue.py", line 195, in _score
    return super()._score(*args, **kwargs)
  File "./ores/scoring_systems/scoring_system.py", line 118, in _score
    inprogress_results=inprogress_results)
  File "./ores/scoring_systems/celery_queue.py", line 100, in _process_missing_scores
    request.to_json(), missing_models, rev_id, root_cache)
  File "/srv/deployment/ores/deploy/venv/lib/python3.5/site-packages/celery/app/task.py", line 412, in delay
    return self.apply_async(args, kwargs)
  File "/srv/deployment/ores/deploy/venv/lib/python3.5/site-packages/celery/app/task.py", line 535, in apply_async
    **options
  File "/srv/deployment/ores/deploy/venv/lib/python3.5/site-packages/celery/app/base.py", line 728, in send_task
    amqp.send_task_message(P, name, message, **options)
  File "/srv/deployment/ores/deploy/venv/lib/python3.5/site-packages/celery/app/amqp.py", line 552, in send_task_message
    **properties
  File "/srv/deployment/ores/deploy/venv/lib/python3.5/site-packages/kombu/messaging.py", line 169, in publish
    compression, headers)
  File "/srv/deployment/ores/deploy/venv/lib/python3.5/site-packages/kombu/messaging.py", line 252, in _prepare
    body) = dumps(body, serializer=serializer)
  File "/srv/deployment/ores/deploy/venv/lib/python3.5/site-packages/kombu/serialization.py", line 221, in dumps
    payload = encoder(data)
  File "/usr/lib/python3.5/contextlib.py", line 77, in __exit__
    self.gen.throw(type, value, traceback)
  File "/srv/deployment/ores/deploy/venv/lib/python3.5/site-packages/kombu/serialization.py", line 54, in _reraise_errors
    reraise(wrapper, wrapper(exc), sys.exc_info()[2])
  File "/srv/deployment/ores/deploy/venv/lib/python3.5/site-packages/vine/five.py", line 178, in reraise
    raise value.with_traceback(tb)
  File "/srv/deployment/ores/deploy/venv/lib/python3.5/site-packages/kombu/serialization.py", line 50, in _reraise_errors
    yield
  File "/srv/deployment/ores/deploy/venv/lib/python3.5/site-packages/kombu/serialization.py", line 221, in dumps
    payload = encoder(data)
  File "/srv/deployment/ores/deploy/venv/lib/python3.5/site-packages/kombu/utils/json.py", line 69, in dumps
    **dict(default_kwargs, **kwargs))
  File "/usr/lib/python3.5/json/__init__.py", line 237, in dumps
    **kw).encode(obj)
  File "/usr/lib/python3.5/json/encoder.py", line 198, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/usr/lib/python3.5/json/encoder.py", line 256, in iterencode
    return _iterencode(o, 0)
  File "/srv/deployment/ores/deploy/venv/lib/python3.5/site-packages/kombu/utils/json.py", line 59, in default
    return super(JSONEncoder, self).default(o)
  File "/usr/lib/python3.5/json/encoder.py", line 179, in default
    raise TypeError(repr(o) + " is not JSON serializable")
kombu.exceptions.EncodeError: frozenset({'itemquality'}) is not JSON serializable