[INFO] 2019-11-18 09:37:49,196: Downloaded: https://gatherer.wizards.com/Pages/Card/Details.aspx?multiverseid=463988&printed=true (Cache = False)
multiprocessing.pool.RemoteTraceback:
"""
Traceback (most recent call last):
  File "/usr/lib/python3/dist-packages/requests/adapters.py", line 440, in send
    timeout=timeout
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 668, in urlopen
    **response_kw)
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 732, in urlopen
    body_pos=body_pos, **response_kw)
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 732, in urlopen
    body_pos=body_pos, **response_kw)
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 732, in urlopen
    body_pos=body_pos, **response_kw)
  [Previous line repeated 4 more times]
  File "/usr/lib/python3/dist-packages/urllib3/connectionpool.py", line 712, in urlopen
    retries = retries.increment(method, url, response=response, _pool=self)
  File "/usr/lib/python3/dist-packages/urllib3/util/retry.py", line 398, in increment
    raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='gatherer.wizards.com', port=443): Max retries exceeded with url: /Pages/Error.aspx?aspxerrorpath=/Pages/Card/Details.aspx (Caused by ResponseError('too many 500 error responses'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib/python3.7/multiprocessing/pool.py", line 121, in worker
    result = (True, func(*args, **kwds))
  File "/usr/lib/python3.7/multiprocessing/pool.py", line 44, in mapstar
    return list(map(*args))
  File "/etc/mtgjson/mtgjson/mtgjson4/compile_mtg.py", line 889, in build_mtgjson_card
    single_card.get("multiverseId"), single_card.set_code
  File "/etc/mtgjson/mtgjson/mtgjson4/provider/gatherer.py", line 75, in get_cards
    timeout=8.0,
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 533, in get
    return self.request('GET', url, **kwargs)
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 520, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 652, in send
    history = [resp for resp in gen] if allow_redirects else []
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 652, in <listcomp>
    history = [resp for resp in gen] if allow_redirects else []
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 234, in resolve_redirects
    **adapter_kwargs
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 630, in send
    r = adapter.send(request, **kwargs)
  File "/usr/lib/python3/dist-packages/requests/adapters.py", line 499, in send
    raise RetryError(e, request=request)
requests.exceptions.RetryError: HTTPSConnectionPool(host='gatherer.wizards.com', port=443): Max retries exceeded with url: /Pages/Error.aspx?aspxerrorpath=/Pages/Card/Details.aspx (Caused by ResponseError('too many 500 error responses'))
"""

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/lib/python3.7/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/etc/mtgjson/mtgjson/mtgjson4/__main__.py", line 193, in <module>
    main()
  File "/etc/mtgjson/mtgjson/mtgjson4/__main__.py", line 167, in main
    compiled = compile_mtg.build_mtgjson_set(sf_set, set_code, args.skip_keys)
  File "/etc/mtgjson/mtgjson/mtgjson4/compile_mtg.py", line 131, in build_mtgjson_set
    card_holder: List[MTGJSONCard] = convert_to_mtgjson(sf_cards)
  File "/etc/mtgjson/mtgjson/mtgjson4/compile_mtg.py", line 560, in convert_to_mtgjson
    results: List[Any] = pool.map(build_mtgjson_card, sf_cards)
  File "/usr/lib/python3.7/multiprocessing/pool.py", line 268, in map
    return self._map_async(func, iterable, mapstar, chunksize).get()
  File "/usr/lib/python3.7/multiprocessing/pool.py", line 657, in get
    raise self._value
requests.exceptions.RetryError: None: Max retries exceeded with url: /Pages/Error.aspx?aspxerrorpath=/Pages/Card/Details.aspx (Caused by None)