swh-web_1                     | TypeError: 'NoneType' object is not iterable
swh-web_1                     | [2019-03-03 14:26:03 +0000] [18] [ERROR] Error handling request /static/img/icons/swh-logo-deposit-192x192.png
swh-web_1                     | Traceback (most recent call last):
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/gunicorn/workers/sync.py", line 135, in handle
swh-web_1                     |     self.handle_request(listener, req, client, addr)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/gunicorn/workers/sync.py", line 176, in handle_request
swh-web_1                     |     respiter = self.wsgi(environ, resp.start_response)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/wsgi.py", line 157, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py", line 124, in get_response
swh-web_1                     |     response = self._middleware_chain(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 140, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 140, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 140, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 140, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 140, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 140, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 140, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 140, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/swh/web/common/middlewares.py", line 63, in __call__
swh-web_1                     |     resp = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/swh/web/common/middlewares.py", line 43, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 138, in __call__
swh-web_1                     |     response = self.process_request(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/middleware/cache.py", line 133, in process_request
swh-web_1                     |     cache_key = get_cache_key(request, self.key_prefix, 'GET', cache=self.cache)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/cache.py", line 362, in get_cache_key
swh-web_1                     |     headerlist = cache.get(cache_key)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/cache/backends/memcached.py", line 79, in get
swh-web_1                     |     val = self._cache.get(key)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/cache/backends/memcached.py", line 172, in _cache
swh-web_1                     |     self._client = self._lib.Client(self._servers, **client_kwargs)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/memcache.py", line 215, in __init__
swh-web_1                     |     self.set_servers(servers)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/memcache.py", line 294, in set_servers
swh-web_1                     |     for s in servers]
swh-web_1                     | TypeError: 'NoneType' object is not iterable
swh-web_1                     | [2019-03-03 14:26:03 +0000] [18] [ERROR] Error handling request /static/img/icons/swh-logo-32x32.png
swh-web_1                     | Traceback (most recent call last):
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/gunicorn/workers/sync.py", line 135, in handle
swh-web_1                     |     self.handle_request(listener, req, client, addr)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/gunicorn/workers/sync.py", line 176, in handle_request
swh-web_1                     |     respiter = self.wsgi(environ, resp.start_response)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/wsgi.py", line 157, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py", line 124, in get_response
swh-web_1                     |     response = self._middleware_chain(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 140, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 140, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 140, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 140, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 140, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 140, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 140, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 140, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/swh/web/common/middlewares.py", line 63, in __call__
swh-web_1                     |     resp = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/swh/web/common/middlewares.py", line 43, in __call__
swh-web_1                     |     response = self.get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 43, in inner
swh-web_1                     |     response = response_for_exception(request, exc)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 93, in response_for_exception
swh-web_1                     |     response = handle_uncaught_exception(request, get_resolver(get_urlconf()), sys.exc_info())
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 41, in inner
swh-web_1                     |     response = get_response(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/deprecation.py", line 138, in __call__
swh-web_1                     |     response = self.process_request(request)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/middleware/cache.py", line 133, in process_request
swh-web_1                     |     cache_key = get_cache_key(request, self.key_prefix, 'GET', cache=self.cache)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/utils/cache.py", line 362, in get_cache_key
swh-web_1                     |     headerlist = cache.get(cache_key)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/cache/backends/memcached.py", line 79, in get
swh-web_1                     |     val = self._cache.get(key)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/django/core/cache/backends/memcached.py", line 172, in _cache
swh-web_1                     |     self._client = self._lib.Client(self._servers, **client_kwargs)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/memcache.py", line 215, in __init__
swh-web_1                     |     self.set_servers(servers)
swh-web_1                     |   File "/usr/local/lib/python3.6/site-packages/memcache.py", line 294, in set_servers
swh-web_1                     |     for s in servers]
swh-web_1                     | TypeError: 'NoneType' object is not iterable