error 47 from memcached_set: (0x7f000800eda0) SERVER HAS FAILED AND IS DISABLED UNTIL TIMED RETRY,  host: mcrouter:11213 -> libmemcached/connect.cc:720

  File "/opt/lib/poetry/toolhub-2uZo5AhP-py3.7/lib/python3.7/site-packages/django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "/opt/lib/poetry/toolhub-2uZo5AhP-py3.7/lib/python3.7/site-packages/django/utils/deprecation.py", line 93, in __call__
    response = self.process_request(request)
  File "/opt/lib/poetry/toolhub-2uZo5AhP-py3.7/lib/python3.7/site-packages/django/middleware/locale.py", line 21, in process_request
    language = translation.get_language_from_request(request, check_path=i18n_patterns_used)
  File "/opt/lib/poetry/toolhub-2uZo5AhP-py3.7/lib/python3.7/site-packages/django/utils/translation/__init__.py", line 236, in get_language_from_request
    return _trans.get_language_from_request(request, check_path)
  File "/opt/lib/poetry/toolhub-2uZo5AhP-py3.7/lib/python3.7/site-packages/django/utils/translation/trans_real.py", line 532, in get_language_from_request
    lang_code = request.session.get(LANGUAGE_SESSION_KEY)
  File "/opt/lib/poetry/toolhub-2uZo5AhP-py3.7/lib/python3.7/site-packages/django/contrib/sessions/backends/base.py", line 65, in get
    return self._session.get(key, default)
  File "/opt/lib/poetry/toolhub-2uZo5AhP-py3.7/lib/python3.7/site-packages/django/contrib/sessions/backends/base.py", line 194, in _get_session
    self._session_cache = self.load()
  File "/opt/lib/poetry/toolhub-2uZo5AhP-py3.7/lib/python3.7/site-packages/django/contrib/sessions/backends/cached_db.py", line 38, in load
    self._cache.set(self.cache_key, data, self.get_expiry_age(expiry=s.expire_date))
  File "/opt/lib/poetry/toolhub-2uZo5AhP-py3.7/lib/python3.7/site-packages/django/core/cache/backends/memcached.py", line 83, in set
    if not self._cache.set(key, value, self.get_backend_timeout(timeout)):