AttributeError at /api/user/profile/
'NoneType' object has no attribute 'permission_template'

Request Method: GET
Request URL: http://95.163.210.46/api/user/profile/?page=1&per_page=10&filter{full_name.icontains}=
Django Version: 2.0.4
Python Executable: /usr/local/bin/python
Python Version: 3.6.4
Python Path: ['/skynet', '/usr/local/bin', '/usr/local/lib/python36.zip', '/usr/local/lib/python3.6', '/usr/local/lib/python3.6/lib-dynload', '/usr/local/lib/python3.6/site-packages', '/skynet']
Server time: Thu, 20 Dec 2018 17:56:14 +0300
Installed Applications:
('django.contrib.admin',
 'django.contrib.admindocs',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'django.contrib.humanize',
 'django_extensions',
 'nested_admin',
 'rest_framework',
 'drf_yasg',
 'dynamic_rest',
 'rest_framework_jwt',
 'corsheaders',
 'django_celery_results',
 'django_celery_beat',
 'djoser',
 'cacheops',
 'web.apps.swagger',
 'web.apps.users',
 'web.apps.area',
 'web.apps.catalog',
 'web.apps.timetable',
 'web.apps.motivation',
 'health_check',
 'health_check.db',
 'health_check.cache',
 'health_check.storage',
 'health_check.contrib.psutil',
 'debug_toolbar')
Installed Middleware:
('django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'corsheaders.middleware.CorsMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'debug_toolbar.middleware.DebugToolbarMiddleware')


Traceback:

File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner
  35.             response = get_response(request)

File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  128.                 response = self.process_exception_by_middleware(e, request)

File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  126.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/usr/local/lib/python3.6/site-packages/django/views/decorators/csrf.py" in wrapped_view
  54.         return view_func(*args, **kwargs)

File "/usr/local/lib/python3.6/site-packages/rest_framework/viewsets.py" in view
  95.             return self.dispatch(request, *args, **kwargs)

File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py" in dispatch
  494.             response = self.handle_exception(exc)

File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py" in handle_exception
  454.             self.raise_uncaught_exception(exc)

File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py" in dispatch
  491.             response = handler(request, *args, **kwargs)

File "/usr/local/lib/python3.6/site-packages/rest_framework/mixins.py" in list
  45.             return self.get_paginated_response(serializer.data)

File "/usr/local/lib/python3.6/site-packages/dynamic_rest/bases.py" in wrapper
  21.             self._resettable_cached_properties[func.__name__] = func(self)

File "/usr/local/lib/python3.6/site-packages/dynamic_rest/serializers.py" in data
  88.         data = super(DynamicListSerializer, self).data

File "/usr/local/lib/python3.6/site-packages/rest_framework/serializers.py" in data
  742.         ret = super(ListSerializer, self).data

File "/usr/local/lib/python3.6/site-packages/rest_framework/serializers.py" in data
  262.                 self._data = self.to_representation(self.instance)

File "/usr/local/lib/python3.6/site-packages/dynamic_rest/serializers.py" in to_representation
  67.         return [self.child.to_representation(item) for item in iterable]

File "/usr/local/lib/python3.6/site-packages/dynamic_rest/serializers.py" in <listcomp>
  67.         return [self.child.to_representation(item) for item in iterable]

File "/usr/local/lib/python3.6/site-packages/dynamic_rest/serializers.py" in to_representation
  632.                 representation = self._faster_to_representation(instance)

File "/usr/local/lib/python3.6/site-packages/dynamic_rest/serializers.py" in _faster_to_representation
  615.                 ret[field.field_name] = field.to_representation(attribute)

File "/usr/local/lib/python3.6/site-packages/rest_framework/fields.py" in to_representation
  1816.         return method(value)

File "/skynet/web/apps/users/serializers.py" in get_changed_permissions
  938.         return obj.changed_permissions

File "/skynet/web/apps/users/models.py" in changed_permissions
  1638.             default_permission = self.role.permission_template.__dict__.items()

Exception Type: AttributeError at /api/user/profile/
Exception Value: 'NoneType' object has no attribute 'permission_template'
Request information:
USER: chongkal@picasel.agency

GET:
page = '1'
per_page = '10'
filter{full_name.icontains} = ''

POST: No POST data

FILES: No FILES data

COOKIES: No cookie data

META:
HTTP_ACCEPT = 'application/json, text/plain, */*'
HTTP_ACCEPT_ENCODING = 'gzip, deflate'
HTTP_ACCEPT_LANGUAGE = 'ru-RU,ru;q=0.9,en-US;q=0.8,en;q=0.7'
HTTP_AUTHORIZATION = 'JWT eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ1c2VyX2lkIjoyNiwidXNlcm5hbWUiOiJjaG9uZ2thbEBwaWNhc2VsLmFnZW5jeSIsImV4cCI6MTU0NTMyNzU0NX0.zabcKqhuEwfCcoytG5Bn8R3xgVR55HAEN7fem46Jf6o'
HTTP_CONNECTION = 'close'
HTTP_HOST = '95.163.210.46'
HTTP_ORIGIN = 'http://localhost:4200'
HTTP_REFERER = 'http://localhost:4200/table/profile'
HTTP_USER_AGENT = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36'
HTTP_X_FORWARDED_FOR = '79.139.158.84'
HTTP_X_REAL_IP = '79.139.158.84'
PATH_INFO = '/api/user/profile/'
QUERY_STRING = 'page=1&per_page=10&filter{full_name.icontains}='
RAW_URI = '/api/user/profile/?page=1&per_page=10&filter{full_name.icontains}='
REMOTE_ADDR = '10.42.116.25'
REMOTE_PORT = '35034'
REQUEST_METHOD = 'GET'
SCRIPT_NAME = ''
SERVER_NAME = '0.0.0.0'
SERVER_PORT = '8000'
SERVER_PROTOCOL = 'HTTP/1.0'
SERVER_SOFTWARE = 'gunicorn/19.7.1'
gunicorn.socket = <socket.socket fd=13, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=0, laddr=('10.42.44.150', 8000), raddr=('10.42.116.25', 35034)>
wsgi.errors = <gunicorn.http.wsgi.WSGIErrorsWrapper object at 0x7f84727f3a20>
wsgi.file_wrapper = ''
wsgi.input = <gunicorn.http.body.Body object at 0x7f84727f3d68>
wsgi.multiprocess = True
wsgi.multithread = False
wsgi.run_once = False
wsgi.url_scheme = 'http'
wsgi.version = '(1, 0)'

Settings:
Using settings module web.settings
ABSOLUTE_URL_OVERRIDES = {}
ADMINS = []
ALLOWED_HOSTS = ['127.0.0.1', '185.224.215.63', '95.163.210.46']
APPEND_SLASH = True
AUTHENTICATION_BACKENDS = ['django.contrib.auth.backends.ModelBackend']
AUTH_PASSWORD_VALIDATORS = '********************'
AUTH_USER_MODEL = 'users.User'
BASE_DIR = '/skynet'
CACHEOPS = {}
CACHEOPS_REDIS = {'host': 'localhost', 'port': 6379}
CACHES = {'default': {'BACKEND': 'django.core.cache.backends.locmem.LocMemCache'}}
CACHE_MIDDLEWARE_ALIAS = 'default'
CACHE_MIDDLEWARE_KEY_PREFIX = '********************'
CACHE_MIDDLEWARE_SECONDS = 600
CELERY_ACCEPT_CONTENT = ['application/json']
CELERY_BEAT_SCHEDULE = {'create_sales_plans_for_new_mount': {'task': 'motivation.tasks.create_sales_plans_for_new_mount', 'schedule': <crontab: * 1 * 15 * (m/h/d/dM/MY)>}}
CELERY_BROKER_URL = 'redis://localhost:6379'
CELERY_RESULT_BACKEND = 'redis://localhost:6379'
CELERY_RESULT_SERIALIZER = 'json'
CELERY_TASK_SERIALIZER = 'json'
CORS_ORIGIN_ALLOW_ALL = True
CSRF_COOKIE_AGE = 31449600
CSRF_COOKIE_DOMAIN = None
CSRF_COOKIE_HTTPONLY = False
CSRF_COOKIE_NAME = 'csrftoken'
CSRF_COOKIE_PATH = '/'
CSRF_COOKIE_SECURE = False
CSRF_FAILURE_VIEW = 'django.views.csrf.csrf_failure'
CSRF_HEADER_NAME = 'HTTP_X_CSRFTOKEN'
CSRF_TRUSTED_ORIGINS = []
CSRF_USE_SESSIONS = False
DATABASES = {'default': {'ENGINE': 'django.db.backends.postgresql_psycopg2', 'NAME': 'skynet', 'USER': 'postgres', 'PASSWORD': '********************', 'PORT': '5432', 'HOST': 'postgres', 'CONN_MAX_AGE': 900, 'ATOMIC_REQUESTS': False, 'AUTOCOMMIT': True, 'OPTIONS': {}, 'TIME_ZONE': None, 'TEST': {'CHARSET': None, 'COLLATION': None, 'NAME': None, 'MIRROR': None}}}
DATABASE_ROUTERS = []
DATA_UPLOAD_MAX_MEMORY_SIZE = 2621440
DATA_UPLOAD_MAX_NUMBER_FIELDS = 1000
DATETIME_FORMAT = 'N j, Y, P'
DATETIME_INPUT_FORMATS = ['%Y-%m-%d %H:%M:%S', '%Y-%m-%d %H:%M:%S.%f', '%Y-%m-%d %H:%M', '%Y-%m-%d', '%m/%d/%Y %H:%M:%S', '%m/%d/%Y %H:%M:%S.%f', '%m/%d/%Y %H:%M', '%m/%d/%Y', '%m/%d/%y %H:%M:%S', '%m/%d/%y %H:%M:%S.%f', '%m/%d/%y %H:%M', '%m/%d/%y']
DATE_FORMAT = 'N j, Y'
DATE_INPUT_FORMATS = ['%Y-%m-%d', '%m/%d/%Y', '%m/%d/%y', '%b %d %Y', '%b %d, %Y', '%d %b %Y', '%d %b, %Y', '%B %d %Y', '%B %d, %Y', '%d %B %Y', '%d %B, %Y']
DEBUG = True
DEBUG_PROPAGATE_EXCEPTIONS = False
DEBUG_TOOLBAR_CONFIG = {'SHOW_TEMPLATE_CONTEXT': True, 'ENABLE_STACKTRACES': True}
DECIMAL_SEPARATOR = '.'
DEFAULT_CHARSET = 'utf-8'
DEFAULT_CONTENT_TYPE = 'text/html'
DEFAULT_EXCEPTION_REPORTER_FILTER = 'django.views.debug.SafeExceptionReporterFilter'
DEFAULT_FILE_STORAGE = 'django.core.files.storage.FileSystemStorage'
DEFAULT_FROM_EMAIL = 'webmaster@localhost'
DEFAULT_INDEX_TABLESPACE = ''
DEFAULT_TABLESPACE = ''
DISALLOWED_USER_AGENTS = []
DJOSER = {'SERIALIZERS': {'user': 'web.apps.users.serializers.UserProfileSerializer'}}
DYNAMIC_REST = {'DEBUG': True, 'ENABLE_BULK_PARTIAL_CREATION': True, 'ENABLE_BULK_UPDATE': True}
EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_FROM = 'sayhello@picasel.agency'
EMAIL_HOST = 'smtp.sendgrid.net'
EMAIL_HOST_PASSWORD = '********************'
EMAIL_HOST_USER = 'chongkal'
EMAIL_PORT = 587
EMAIL_SSL_CERTFILE = None
EMAIL_SSL_KEYFILE = '********************'
EMAIL_SUBJECT_PREFIX = '[Django] '
EMAIL_TIMEOUT = None
EMAIL_USE_LOCALTIME = False
EMAIL_USE_SSL = False
EMAIL_USE_TLS = True
FILE_CHARSET = 'utf-8'
FILE_UPLOAD_DIRECTORY_PERMISSIONS = None
FILE_UPLOAD_HANDLERS = ['django.core.files.uploadhandler.MemoryFileUploadHandler', 'django.core.files.uploadhandler.TemporaryFileUploadHandler']
FILE_UPLOAD_MAX_MEMORY_SIZE = 2621440
FILE_UPLOAD_PERMISSIONS = None
FILE_UPLOAD_TEMP_DIR = None
FIRST_DAY_OF_WEEK = 0
FIXTURE_DIRS = []
FORCE_SCRIPT_NAME = None
FORMAT_MODULE_PATH = None
FORM_RENDERER = 'django.forms.renderers.DjangoTemplates'
IGNORABLE_404_URLS = "(re.compile('/favicon.ico'), re.compile('/robots.txt'))"
INSTALLED_APPS = "('django.contrib.admin', 'django.contrib.admindocs', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'django.contrib.staticfiles', 'django.contrib.humanize', 'django_extensions', 'nested_admin', 'rest_framework', 'drf_yasg', 'dynamic_rest', 'rest_framework_jwt', 'corsheaders', 'django_celery_results', 'django_celery_beat', 'djoser', 'cacheops', 'web.apps.swagger', 'web.apps.users', 'web.apps.area', 'web.apps.catalog', 'web.apps.timetable', 'web.apps.motivation', 'health_check', 'health_check.db', 'health_check.cache', 'health_check.storage', 'health_check.contrib.psutil', 'debug_toolbar')"
INTERNAL_IPS = '127.0.0.1:8000'
JWT_AUTH = {'JWT_EXPIRATION_DELTA': datetime.timedelta(0, 10000)}
LANGUAGES = [('af', 'Afrikaans'), ('ar', 'Arabic'), ('ast', 'Asturian'), ('az', 'Azerbaijani'), ('bg', 'Bulgarian'), ('be', 'Belarusian'), ('bn', 'Bengali'), ('br', 'Breton'), ('bs', 'Bosnian'), ('ca', 'Catalan'), ('cs', 'Czech'), ('cy', 'Welsh'), ('da', 'Danish'), ('de', 'German'), ('dsb', 'Lower Sorbian'), ('el', 'Greek'), ('en', 'English'), ('en-au', 'Australian English'), ('en-gb', 'British English'), ('eo', 'Esperanto'), ('es', 'Spanish'), ('es-ar', 'Argentinian Spanish'), ('es-co', 'Colombian Spanish'), ('es-mx', 'Mexican Spanish'), ('es-ni', 'Nicaraguan Spanish'), ('es-ve', 'Venezuelan Spanish'), ('et', 'Estonian'), ('eu', 'Basque'), ('fa', 'Persian'), ('fi', 'Finnish'), ('fr', 'French'), ('fy', 'Frisian'), ('ga', 'Irish'), ('gd', 'Scottish Gaelic'), ('gl', 'Galician'), ('he', 'Hebrew'), ('hi', 'Hindi'), ('hr', 'Croatian'), ('hsb', 'Upper Sorbian'), ('hu', 'Hungarian'), ('ia', 'Interlingua'), ('id', 'Indonesian'), ('io', 'Ido'), ('is', 'Icelandic'), ('it', 'Italian'), ('ja', 'Japanese'), ('ka', 'Georgian'), ('kab', 'Kabyle'), ('kk', 'Kazakh'), ('km', 'Khmer'), ('kn', 'Kannada'), ('ko', 'Korean'), ('lb', 'Luxembourgish'), ('lt', 'Lithuanian'), ('lv', 'Latvian'), ('mk', 'Macedonian'), ('ml', 'Malayalam'), ('mn', 'Mongolian'), ('mr', 'Marathi'), ('my', 'Burmese'), ('nb', 'Norwegian BokmГҐl'), ('ne', 'Nepali'), ('nl', 'Dutch'), ('nn', 'Norwegian Nynorsk'), ('os', 'Ossetic'), ('pa', 'Punjabi'), ('pl', 'Polish'), ('pt', 'Portuguese'), ('pt-br', 'Brazilian Portuguese'), ('ro', 'Romanian'), ('ru', 'Russian'), ('sk', 'Slovak'), ('sl', 'Slovenian'), ('sq', 'Albanian'), ('sr', 'Serbian'), ('sr-latn', 'Serbian Latin'), ('sv', 'Swedish'), ('sw', 'Swahili'), ('ta', 'Tamil'), ('te', 'Telugu'), ('th', 'Thai'), ('tr', 'Turkish'), ('tt', 'Tatar'), ('udm', 'Udmurt'), ('uk', 'Ukrainian'), ('ur', 'Urdu'), ('vi', 'Vietnamese'), ('zh-hans', 'Simplified Chinese'), ('zh-hant', 'Traditional Chinese')]
LANGUAGES_BIDI = ['he', 'ar', 'fa', 'ur']
LANGUAGE_CODE = 'en'
LANGUAGE_COOKIE_AGE = None
LANGUAGE_COOKIE_DOMAIN = None
LANGUAGE_COOKIE_NAME = 'django_language'
LANGUAGE_COOKIE_PATH = '/'
LOCALE_PATHS = "('/skynet/web/conf/locale',)"
LOGGING = {'version': 1, 'disable_existing_loggers': True, 'root': {'level': 'WARNING', 'handlers': ['console']}, 'formatters': {'verbose': {'format': '%(asctime)s %(levelname)s %(message)s'}}, 'handlers': {'console': {'level': 'DEBUG', 'class': 'logging.StreamHandler', 'formatter': 'verbose'}}, 'loggers': {'django.db.backends': {'level': 'INFO', 'handlers': ['console'], 'propagate': False}, 'django.request': {'level': 'ERROR', 'handlers': ['console'], 'propagate': False}, 'django.server': {'level': 'INFO', 'handlers': ['console'], 'propagate': False}, 'django.security': {'level': 'INFO', 'handlers': ['console'], 'propagate': False}}}
LOGGING_CONFIG = 'logging.config.dictConfig'
LOGIN_REDIRECT_URL = '/accounts/profile/'
LOGIN_URL = '/accounts/login/'
LOGOUT_REDIRECT_URL = None
MANAGERS = []
MEDIA_ROOT = '/skynet/web/media'
MEDIA_URL = '/media/'
MESSAGE_STORAGE = 'django.contrib.messages.storage.fallback.FallbackStorage'
MIDDLEWARE = "('django.middleware.security.SecurityMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'corsheaders.middleware.CorsMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware', 'debug_toolbar.middleware.DebugToolbarMiddleware')"
MIGRATION_MODULES = {}
MONTH_DAY_FORMAT = 'F j'
NUMBER_GROUPING = 0
PASSWORD_HASHERS = '********************'
PASSWORD_RESET_TIMEOUT_DAYS = '********************'
PREPEND_WWW = False
PRODUCTION = False
PROJECT_DIR = '/skynet/web'
RAVEN_CONFIG = {'dsn': 'https://715e5801fb954856a8ad4b6eac5962c7:7333b166cf644414bb5f6422fa3ca2c0@sentry.io/1262720', 'release': '38e49a45b8a464199d95fc7eabcd4a25cf15c784'}
REMOTE_DB = {'NAME': 'PhilipsCRM', 'USER': 'user', 'PASSWORD': '********************', 'HOST': 'host:port'}
REST_FRAMEWORK = {'DEFAULT_RENDERER_CLASSES': ['rest_framework.renderers.JSONRenderer', 'dynamic_rest.renderers.DynamicBrowsableAPIRenderer'], 'DEFAULT_PERMISSION_CLASSES': ('rest_framework.permissions.AllowAny',), 'DEFAULT_AUTHENTICATION_CLASSES': ('web.utils.CsrfExemptSessionAuthentication', 'rest_framework_jwt.authentication.JSONWebTokenAuthentication', 'rest_framework.authentication.BasicAuthentication')}
ROOT_URLCONF = 'web.urls'
SECRET_KEY = '********************'
SECURE_BROWSER_XSS_FILTER = False
SECURE_CONTENT_TYPE_NOSNIFF = False
SECURE_HSTS_INCLUDE_SUBDOMAINS = False
SECURE_HSTS_PRELOAD = False
SECURE_HSTS_SECONDS = 0
SECURE_PROXY_SSL_HEADER = None
SECURE_REDIRECT_EXEMPT = []
SECURE_SSL_HOST = None
SECURE_SSL_REDIRECT = False
SERVER_EMAIL = 'root@localhost'
SESSION_CACHE_ALIAS = 'default'
SESSION_COOKIE_AGE = 5184000
SESSION_COOKIE_DOMAIN = None
SESSION_COOKIE_HTTPONLY = True
SESSION_COOKIE_NAME = 'sid'
SESSION_COOKIE_PATH = '/'
SESSION_COOKIE_SECURE = False
SESSION_ENGINE = 'django.contrib.sessions.backends.cached_db'
SESSION_EXPIRE_AT_BROWSER_CLOSE = False
SESSION_FILE_PATH = None
SESSION_SAVE_EVERY_REQUEST = False
SESSION_SERIALIZER = 'django.contrib.sessions.serializers.PickleSerializer'
SETTINGS_MODULE = 'web.settings'
SHORT_DATETIME_FORMAT = 'm/d/Y P'
SHORT_DATE_FORMAT = 'm/d/Y'
SIGNING_BACKEND = 'django.core.signing.TimestampSigner'
SILENCED_SYSTEM_CHECKS = []
STATICFILES_DIRS = []
STATICFILES_FINDERS = "('django.contrib.staticfiles.finders.FileSystemFinder', 'django.contrib.staticfiles.finders.AppDirectoriesFinder')"
STATICFILES_STORAGE = 'django.contrib.staticfiles.storage.ManifestStaticFilesStorage'
STATIC_ROOT = '/skynet/web/static'
STATIC_URL = '/static/'
TEMPLATES = [{'BACKEND': 'django.template.backends.django.DjangoTemplates', 'DIRS': ['/skynet/web/templates'], 'OPTIONS': {'debug': True, 'context_processors': ['django.contrib.auth.context_processors.auth', 'django.template.context_processors.debug', 'django.template.context_processors.i18n', 'django.template.context_processors.media', 'django.template.context_processors.static', 'django.template.context_processors.tz', 'django.template.context_processors.request', 'django.contrib.messages.context_processors.messages'], 'loaders': ('django.template.loaders.filesystem.Loader', 'django.template.loaders.app_directories.Loader')}}]
TEST_NON_SERIALIZED_APPS = []
TEST_RUNNER = 'django.test.runner.DiscoverRunner'
THOUSAND_SEPARATOR = ','
TIME_FORMAT = 'P'
TIME_INPUT_FORMATS = ['%H:%M:%S', '%H:%M:%S.%f', '%H:%M']
TIME_ZONE = 'Europe/Moscow'
USE_ETAGS = False
USE_I18N = True
USE_L10N = True
USE_THOUSAND_SEPARATOR = False
USE_TZ = True
USE_X_FORWARDED_HOST = False
USE_X_FORWARDED_PORT = False
WSGI_APPLICATION = 'web.wsgi.application'
X_FRAME_OPTIONS = 'SAMEORIGIN'
YEAR_MONTH_FORMAT = 'F Y'
_DEBUG_ENV = 'true'
_PRODUCTION_ENV = None


You're seeing this error because you have DEBUG = True in your
Django settings file. Change that to False, and Django will
display a standard page generated by the handler for this status code.