List index out of range when creating assignment

Sporadically when calling the /api/assignment/ endpoint in quick succession, the server will return a 500 response with the following debug output. It seems to happen more often when the the submission for which the assignment has been requested has only a few available submissions left.
This seems to be a concurrency related issue.

At the moment this bug is not visible to the user due to the frontend handling it.

IndexError at /api/assignment/
list index out of range

Request Method: POST
Request URL: http://localhost:8000/api/assignment/
Django Version: 2.1
Python Executable: /home/robin/code/grady/.venv/bin/python
Python Version: 3.6.2
Python Path: ['/home/robin/code/grady', '/usr/local/lib/python36.zip', '/usr/local/lib/python3.6', '/usr/local/lib/python3.6/lib-dynload', '/home/robin/code/grady/.venv/lib/python3.6/site-packages']
Server time: Thu, 3 Jan 2019 12:18:01 +0000
Installed Applications:
['django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'whitenoise.runserver_nostatic',
 'django.contrib.staticfiles',
 'django_extensions',
 'rest_framework',
 'corsheaders',
 'drf_yasg',
 'core']
Installed Middleware:
['corsheaders.middleware.CorsMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'whitenoise.middleware.WhiteNoiseMiddleware']


Traceback:

File "/home/robin/code/grady/.venv/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner
  34.             response = get_response(request)

File "/home/robin/code/grady/.venv/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  126.                 response = self.process_exception_by_middleware(e, request)

File "/home/robin/code/grady/.venv/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  124.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/home/robin/code/grady/.venv/lib/python3.6/site-packages/django/views/decorators/csrf.py" in wrapped_view
  54.         return view_func(*args, **kwargs)

File "/home/robin/code/grady/.venv/lib/python3.6/site-packages/rest_framework/viewsets.py" in view
  103.             return self.dispatch(request, *args, **kwargs)

File "/home/robin/code/grady/.venv/lib/python3.6/site-packages/rest_framework/views.py" in dispatch
  483.             response = self.handle_exception(exc)

File "/home/robin/code/grady/.venv/lib/python3.6/site-packages/rest_framework/views.py" in handle_exception
  443.             self.raise_uncaught_exception(exc)

File "/home/robin/code/grady/.venv/lib/python3.6/site-packages/rest_framework/views.py" in dispatch
  480.             response = handler(request, *args, **kwargs)

File "/home/robin/code/grady/core/views/subscription.py" in create
  130.         return self._fetch_assignment(serializer)

File "/home/robin/code/grady/core/views/subscription.py" in _fetch_assignment
  86.             serializer.save()

File "/home/robin/code/grady/.venv/lib/python3.6/site-packages/rest_framework/serializers.py" in save
  214.             self.instance = self.create(validated_data)

File "/home/robin/code/grady/core/serializers/subscription.py" in create
  43.         return subscription.get_or_create_work_assignment()

File "/usr/local/lib/python3.6/contextlib.py" in inner
  52.                 return func(*args, **kwds)

File "/home/robin/code/grady/core/models.py" in get_or_create_work_assignment
  671.         task = get_random_element_from_queryset(taskqueryset)

File "/home/robin/code/grady/core/models.py" in get_random_element_from_queryset
  52.     return queryset.all()[index]

File "/home/robin/code/grady/.venv/lib/python3.6/site-packages/django/db/models/query.py" in __getitem__
  303.         return qs._result_cache[0]

Exception Type: IndexError at /api/assignment/
Exception Value: list index out of range
Request information:
USER: rev

GET: No GET data

POST: No POST data

FILES: No FILES data

COOKIES: No cookie data

META:
CONTENT_LENGTH = '55'
CONTENT_TYPE = 'application/json;charset=utf-8'
DBUS_SESSION_BUS_ADDRESS = 'unix:abstract=/tmp/dbus-J38A1TKOOF,guid=3317334fccc859fa44cc00bf5c16c959'
DEFAULTS_PATH = '/usr/share/gconf/awesome.default.path'
DESKTOP_SESSION = 'awesome'
DISPLAY = ':0'
DJANGO_DEV = 'True'
DJANGO_SETTINGS_MODULE = 'grady.settings'
GATEWAY_INTERFACE = 'CGI/1.1'
GDMSESSION = 'awesome'
GDM_LANG = 'en_US'
GOPATH = '/home/robin/code/go'
GTK2_MODULES = 'overlay-scrollbar'
GTK_MODULES = 'gail:atk-bridge'
HOME = '/home/robin'
HTTP_ACCEPT = 'application/json, text/plain, */*'
HTTP_ACCEPT_ENCODING = 'gzip, deflate'
HTTP_ACCEPT_LANGUAGE = 'en-US,en;q=0.5'
HTTP_AUTHORIZATION = 'JWT eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJ1c2VyX2lkIjoiNmU4NDZhZWItMGEzNC00NzAxLTgzMzUtZTdmNGVkYzYwODdiIiwidXNlcm5hbWUiOiJyZXYiLCJleHAiOjE1NDY1MjE0MTAsImVtYWlsIjoiIiwib3JpZ19pYXQiOjE1NDY1MTc4MTB9.eeYrU1M4Rky3NAD-CAHSa_7Bw0QOpG4hziQvlmLQt6I'
HTTP_CACHE_CONTROL = 'no-cache'
HTTP_CONNECTION = 'keep-alive'
HTTP_DNT = '1'
HTTP_HOST = 'localhost:8000'
HTTP_ORIGIN = 'http://localhost:8080'
HTTP_PRAGMA = 'no-cache'
HTTP_REFERER = 'http://localhost:8080/'
HTTP_USER_AGENT = 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:64.0) Gecko/20100101 Firefox/64.0'
LANG = 'en_US.UTF-8'
LANGUAGE = 'en_US'
LC_ADDRESS = 'de_DE.UTF-8'
LC_CTYPE = 'en_US.UTF-8'
LC_IDENTIFICATION = 'de_DE.UTF-8'
LC_MEASUREMENT = 'de_DE.UTF-8'
LC_MONETARY = 'de_DE.UTF-8'
LC_NAME = 'de_DE.UTF-8'
LC_NUMERIC = 'en_US.UTF-8'
LC_PAPER = 'de_DE.UTF-8'
LC_TELEPHONE = 'de_DE.UTF-8'
LC_TIME = 'de_DE.UTF-8'
LESS = '-R'
LOGNAME = 'robin'
LSCOLORS = 'Gxfxcxdxbxegedabagacad'
LS_COLORS = 'rs=0:di=01;34:ln=01;36:mh=00:pi=40;33:so=01;35:do=01;35:bd=40;33;01:cd=40;33;01:or=40;31;01:mi=00:su=37;41:sg=30;43:ca=30;41:tw=30;42:ow=34;42:st=37;44:ex=01;32:*.tar=01;31:*.tgz=01;31:*.arc=01;31:*.arj=01;31:*.taz=01;31:*.lha=01;31:*.lz4=01;31:*.lzh=01;31:*.lzma=01;31:*.tlz=01;31:*.txz=01;31:*.tzo=01;31:*.t7z=01;31:*.zip=01;31:*.z=01;31:*.Z=01;31:*.dz=01;31:*.gz=01;31:*.lrz=01;31:*.lz=01;31:*.lzo=01;31:*.xz=01;31:*.bz2=01;31:*.bz=01;31:*.tbz=01;31:*.tbz2=01;31:*.tz=01;31:*.deb=01;31:*.rpm=01;31:*.jar=01;31:*.war=01;31:*.ear=01;31:*.sar=01;31:*.rar=01;31:*.alz=01;31:*.ace=01;31:*.zoo=01;31:*.cpio=01;31:*.7z=01;31:*.rz=01;31:*.cab=01;31:*.jpg=01;35:*.jpeg=01;35:*.gif=01;35:*.bmp=01;35:*.pbm=01;35:*.pgm=01;35:*.ppm=01;35:*.tga=01;35:*.xbm=01;35:*.xpm=01;35:*.tif=01;35:*.tiff=01;35:*.png=01;35:*.svg=01;35:*.svgz=01;35:*.mng=01;35:*.pcx=01;35:*.mov=01;35:*.mpg=01;35:*.mpeg=01;35:*.m2v=01;35:*.mkv=01;35:*.webm=01;35:*.ogm=01;35:*.mp4=01;35:*.m4v=01;35:*.mp4v=01;35:*.vob=01;35:*.qt=01;35:*.nuv=01;35:*.wmv=01;35:*.asf=01;35:*.rm=01;35:*.rmvb=01;35:*.flc=01;35:*.avi=01;35:*.fli=01;35:*.flv=01;35:*.gl=01;35:*.dl=01;35:*.xcf=01;35:*.xwd=01;35:*.yuv=01;35:*.cgm=01;35:*.emf=01;35:*.ogv=01;35:*.ogx=01;35:*.aac=00;36:*.au=00;36:*.flac=00;36:*.m4a=00;36:*.mid=00;36:*.midi=00;36:*.mka=00;36:*.mp3=00;36:*.mpc=00;36:*.ogg=00;36:*.ra=00;36:*.wav=00;36:*.oga=00;36:*.opus=00;36:*.spx=00;36:*.xspf=00;36:'
MANDATORY_PATH = '/usr/share/gconf/awesome.mandatory.path'
OLDPWD = '/home/robin'
PAGER = 'less'
PATH = '/home/robin/code/grady/.venv/bin:/home/robin/applications/Telegram:/home/robin/ides/jetbrains-toolbox-1.6.2914:/home/robin/.cargo/bin:/home/robin/code/exercism/bin:/home/robin/.yarn/bin:/home/robin/bin:/home/robin/.cargo/bin:/home/robin/bin:/home/robin/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin:/usr/local/go/bin:/home/robin/.fzf/bin'
PATH_INFO = '/api/assignment/'
PS1 = '(.venv) ${ret_status} %{$fg[cyan]%}%c%{$reset_color%} $(git_prompt_info)'
PWD = '/home/robin/code/grady'
QT_ACCESSIBILITY = '1'
QT_LINUX_ACCESSIBILITY_ALWAYS_ON = '1'
QT_QPA_PLATFORMTHEME = 'appmenu-qt5'
QUERY_STRING = ''
REMOTE_ADDR = '127.0.0.1'
REMOTE_HOST = ''
REQUEST_METHOD = 'POST'
RUN_MAIN = 'true'
SCRIPT_NAME = ''
SERVER_NAME = 'localhost'
SERVER_PORT = '8000'
SERVER_PROTOCOL = 'HTTP/1.1'
SERVER_SOFTWARE = 'WSGIServer/0.2'
SHELL = '/bin/zsh'
SHLVL = '1'
SSH_AGENT_PID = '8987'
SSH_AUTH_SOCK = '/tmp/ssh-lnwWNW1P4cju/agent.8918'
TERM = 'xterm-256color'
TZ = 'UTC'
USER = 'robin'
VIRTUAL_ENV = '/home/robin/code/grady/.venv'
VTE_VERSION = '4205'
WINDOWID = '83889327'
XAUTHORITY = '/home/robin/.Xauthority'
XDG_CONFIG_DIRS = '/etc/xdg/xdg-awesome:/etc/xdg'
XDG_DATA_DIRS = '/usr/share/awesome:/usr/local/share:/usr/share:/var/lib/snapd/desktop:/var/lib/snapd/desktop'
XDG_GREETER_DATA_DIR = '/var/lib/lightdm-data/robin'
XDG_RUNTIME_DIR = '/run/user/1000'
XDG_SEAT = 'seat0'
XDG_SEAT_PATH = '/org/freedesktop/DisplayManager/Seat0'
XDG_SESSION_DESKTOP = 'awesome'
XDG_SESSION_ID = 'c2'
XDG_SESSION_PATH = '/org/freedesktop/DisplayManager/Session0'
XDG_SESSION_TYPE = 'x11'
XDG_VTNR = '7'
ZSH = '/home/robin/.oh-my-zsh'
_ = '/home/robin/code/grady/./manage.py'
_JAVA_AWT_WM_NONREPARENTING = '1'
wsgi.errors = <_io.TextIOWrapper name='<stderr>' mode='w' encoding='UTF-8'>
wsgi.file_wrapper = ''
wsgi.input = <_io.BufferedReader name=6>
wsgi.multiprocess = False
wsgi.multithread = True
wsgi.run_once = False
wsgi.url_scheme = 'http'
wsgi.version = '(1, 0)'

Settings:
Using settings module grady.settings
ABSOLUTE_URL_OVERRIDES = {}
ADMINS = []
ALLOWED_HOSTS = []
APPEND_SLASH = True
AUTHENTICATION_BACKENDS = ['django.contrib.auth.backends.ModelBackend']
AUTH_PASSWORD_VALIDATORS = '********************'
AUTH_USER_MODEL = 'core.UserAccount'
BASE_DIR = '/home/robin/code/grady'
CACHES = {'default': {'BACKEND': 'django.core.cache.backends.locmem.LocMemCache'}}
CACHE_MIDDLEWARE_ALIAS = 'default'
CACHE_MIDDLEWARE_KEY_PREFIX = '********************'
CACHE_MIDDLEWARE_SECONDS = 600
CORS_ORIGIN_WHITELIST = 'localhost:8080localhost:8000'
CSRF_COOKIE_AGE = 31449600
CSRF_COOKIE_DOMAIN = None
CSRF_COOKIE_HTTPONLY = False
CSRF_COOKIE_NAME = 'csrftoken'
CSRF_COOKIE_PATH = '/'
CSRF_COOKIE_SAMESITE = 'Lax'
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': 'postgres', 'USER': 'postgres', 'PASSWORD': '********************', 'HOST': 'localhost', 'PORT': '5432', 'ATOMIC_REQUESTS': False, 'AUTOCOMMIT': True, 'CONN_MAX_AGE': 0, '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
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 = []
EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_HOST = 'localhost'
EMAIL_HOST_PASSWORD = '********************'
EMAIL_HOST_USER = ''
EMAIL_PORT = 25
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 = False
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 = []
INSTALLED_APPS = ['django.contrib.admin', 'django.contrib.auth', 'django.contrib.contenttypes', 'django.contrib.sessions', 'django.contrib.messages', 'whitenoise.runserver_nostatic', 'django.contrib.staticfiles', 'django_extensions', 'rest_framework', 'corsheaders', 'drf_yasg', 'core']
INTERNAL_IPS = []
JSON_CAMEL_CASE = {'JSON_UNDERSCOREIZE': {'no_underscore_before_number': True}}
JWT_AUTH = {'JWT_EXPIRATION_DELTA': datetime.timedelta(0, 3600), 'JWT_ALLOW_REFRESH': True}
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 Bokmål'), ('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-us'
LANGUAGE_COOKIE_AGE = None
LANGUAGE_COOKIE_DOMAIN = None
LANGUAGE_COOKIE_NAME = 'django_language'
LANGUAGE_COOKIE_PATH = '/'
LOCALE_PATHS = []
LOGGING = {'version': 1, 'disable_existing_loggers': False, 'formatters': {'default-format': {'format': '[%(asctime)s] [%(levelname)s] %(name)-20s %(message)s'}, 'json': {'class': 'pythonjsonlogger.jsonlogger.JsonFormatter', 'format': '(asctime) (levelname) (name) (funcName) (message)'}}, 'handlers': {'console': {'level': 'DEBUG', 'class': 'logging.StreamHandler', 'formatter': 'default-format'}}, 'loggers': {'django': {'handlers': ['console']}, 'django.request': {'handlers': ['console']}, 'gunicorn.error': {'handlers': ['console']}, 'gunicorn.access': {'handlers': ['console']}, 'core': {'handlers': ['console'], 'level': 'DEBUG'}}}
LOGGING_CONFIG = 'logging.config.dictConfig'
LOGIN_REDIRECT_URL = '/'
LOGIN_URL = '/'
LOGOUT_REDIRECT_URL = None
LOG_FORMAT = 'default-format'
LOG_LEVEL = 'DEBUG'
MANAGERS = []
MEDIA_ROOT = ''
MEDIA_URL = ''
MESSAGE_STORAGE = 'django.contrib.messages.storage.fallback.FallbackStorage'
MIDDLEWARE = ['corsheaders.middleware.CorsMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.security.SecurityMiddleware', 'django.contrib.sessions.middleware.SessionMiddleware', 'django.middleware.common.CommonMiddleware', 'django.middleware.csrf.CsrfViewMiddleware', 'django.contrib.auth.middleware.AuthenticationMiddleware', 'django.contrib.messages.middleware.MessageMiddleware', 'django.middleware.clickjacking.XFrameOptionsMiddleware', 'whitenoise.middleware.WhiteNoiseMiddleware']
MIGRATION_MODULES = {}
MONTH_DAY_FORMAT = 'F j'
NUMBER_GROUPING = 0
PASSWORD_HASHERS = '********************'
PASSWORD_RESET_TIMEOUT_DAYS = '********************'
PREPEND_WWW = False
REST_FRAMEWORK = {'TEST_REQUEST_DEFAULT_FORMAT': 'json', 'DEFAULT_PERMISSION_CLASSES': ('rest_framework.permissions.IsAuthenticated',), 'DEFAULT_AUTHENTICATION_CLASSES': ('rest_framework_jwt.authentication.JSONWebTokenAuthentication', 'rest_framework.authentication.SessionAuthentication', 'rest_framework.authentication.BasicAuthentication'), 'DEFAULT_RENDERER_CLASSES': ('djangorestframework_camel_case.render.CamelCaseJSONRenderer',), 'DEFAULT_PARSER_CLASSES': ('djangorestframework_camel_case.parser.CamelCaseJSONParser',)}
ROOT_URLCONF = 'grady.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 = 1209600
SESSION_COOKIE_DOMAIN = None
SESSION_COOKIE_HTTPONLY = True
SESSION_COOKIE_NAME = 'sessionid'
SESSION_COOKIE_PATH = '/'
SESSION_COOKIE_SAMESITE = 'Lax'
SESSION_COOKIE_SECURE = False
SESSION_ENGINE = 'django.contrib.sessions.backends.db'
SESSION_EXPIRE_AT_BROWSER_CLOSE = False
SESSION_FILE_PATH = None
SESSION_SAVE_EVERY_REQUEST = False
SESSION_SERIALIZER = 'django.contrib.sessions.serializers.JSONSerializer'
SETTINGS_MODULE = 'grady.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 = "('frontend/dist/static',)"
STATICFILES_FINDERS = "('django.contrib.staticfiles.finders.FileSystemFinder', 'django.contrib.staticfiles.finders.AppDirectoriesFinder')"
STATICFILES_STORAGE = 'whitenoise.storage.CompressedManifestStaticFilesStorage'
STATIC_ROOT = '/home/robin/code/grady/static'
STATIC_URL = '/static/'
STOP_ON_PASS = '********************'
TEMPLATES = [{'BACKEND': 'django.template.backends.django.DjangoTemplates', 'DIRS': [], 'APP_DIRS': True, 'OPTIONS': {'context_processors': ['django.template.context_processors.debug', 'django.template.context_processors.request', 'django.contrib.auth.context_processors.auth', 'django.contrib.messages.context_processors.messages']}}]
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 = 'UTC'
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 = 'grady.wsgi.application'
X_FRAME_OPTIONS = 'SAMEORIGIN'
YEAR_MONTH_FORMAT = 'F Y'


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.