Python入门学习,遭遇‘learning_logs ‘ is not a registered namespace报错,与网上搜索到的问题原因不一样

博主在学习《Python从入门到实践》时遇到'learning_logs'不是注册命名空间的问题。多数解决方案建议在urls.py中添加namespace,或检查'app_name'定义。博主发现问题在于base.html模板标签的空格,去除空格后问题解决。此博文旨在分享这一细节,帮助遇到同样问题的初学者节省调试时间。

Python小白最近在学习《Python从入门到实践》的时候,卡在了第18章"学习笔记"这个项目上面,碰到'learning_logs ' is not a registered namespace报错,如下图:

 立马网上搜了下,果然也有好多小伙伴在学习中也碰到了这样的报错,大多数的解决方法是在urls.py程序的include函数增加namespace='learning_logs'的参数,说是问题能够成功解决。也有提出是由于app_name=‘learning_logs’未定义而导致。小白照着修改和查看了下都没问题,但报错依旧。

无奈只好自己再好好看看是不是哪个小细节出问题了,发现在base.html当时编写模板标签的时候发现冒号":"两边习惯性的留了空格,想着是否因为多了空格符导致的......(HTML和Python的编程习惯还是不一样的

 去掉空格后打开运行的网页,终于恢复正常!尝试着把前面添加的namespace='learning_logs'参数删除,程序运行依然正常。

终于发现问题所在,虽然很小,因为和网上查到的解决办法不一样,且不是问题的根本原因,特别写下这篇记录,希望给后面学习的小伙伴省下debug的时间~

NoReverseMatch at / 'learning_logs' is not a registered namespace Request Method: GET Request URL: http://127.0.0.1:8000/ Django Version: 2.0.10 Exception Type: NoReverseMatch Exception Value: 'learning_logs' is not a registered namespace Exception Location: e:\learn\learning_log\ll_env\lib\site-packages\django\urls\base.py in reverse, line 86 Python Executable: e:\learn\learning_log\ll_env\Scripts\python.exe Python Version: 3.4.2 Python Path: ['e:\\learn\\learning_log', 'C:\\Windows\\system32\\python34.zip', 'C:\\Python34\\DLLs', 'C:\\Python34\\lib', 'C:\\Python34', 'e:\\learn\\learning_log\\ll_env', 'e:\\learn\\learning_log\\ll_env\\lib\\site-packages'] Server time: Thu, 15 May 2025 01:52:30 +0000 Error during template rendering In template e:\learn\learning_log\learning_logs\templates\learning_logs\base.html, error at line 3 'learning_logs' is not a registered namespace 1 <p> 2 <a href="{% url 'learning_logs:index' % }"> Learning Log</a> - 3 <a href="{% url 'learning_logs:topics' %}">Topics</a> 4 </p> 5 6 {% block content %} {% endblock content %} 7 Traceback Switch to copy-and-paste view e:\learn\learning_log\ll_env\lib\site-packages\django\urls\base.py in reverse extra, resolver = resolver.namespace_dict[ns] ... ▶ Local vars During handling of the above exception ('learning_logs'), another exception occurred: e:\learn\learning_log\ll_env\lib\site-packages\django\core\handlers\exception.py in inner response = get_response(request) ... ▶ Local vars e:\learn\learning_log\ll_env\lib\site-packages\django\core\handlers\base.py in _get_response response = self.process_exception_by_middleware(e, request) ... ▶ Local vars e:\learn\learning_log\ll_env\lib\site-packages\django\core\handlers\base.py in _get_response response = wrapped_callback(request, *callback_args, **callback_kwargs) ... ▶ Local vars e:\learn\learning_log\learning_logs\views.py in index return render(request,'learning_logs/index.html') ... ▶ Local vars e:\learn\learning_log\ll_env\lib\site-packages\django\shortcuts.py in render content = loader.render_to_string(template_name, context, request, using=using) ... ▶ Local vars e:\learn\learning_log\ll_env\lib\site-packages\django\template\loader.py in render_to_string return template.render(context, request) ... ▶ Local vars e:\learn\learning_log\ll_env\lib\site-packages\django\template\backends\django.py in render return self.template.render(context) ... ▶ Local vars e:\learn\learning_log\ll_env\lib\site-packages\django\template\base.py in render return self._render(context) ... ▶ Local vars e:\learn\learning_log\ll_env\lib\site-packages\django\template\base.py in _render return self.nodelist.render(context) ... ▶ Local vars e:\learn\learning_log\ll_env\lib\site-packages\django\template\base.py in render bit = node.render_annotated(context) ... ▶ Local vars e:\learn\learning_log\ll_env\lib\site-packages\django\template\base.py in render_annotated return self.render(context) ... ▶ Local vars e:\learn\learning_log\ll_env\lib\site-packages\django\template\loader_tags.py in render return compiled_parent._render(context) ... ▶ Local vars e:\learn\learning_log\ll_env\lib\site-packages\django\template\base.py in _render return self.nodelist.render(context) ... ▶ Local vars e:\learn\learning_log\ll_env\lib\site-packages\django\template\base.py in render bit = node.render_annotated(context) ... ▶ Local vars e:\learn\learning_log\ll_env\lib\site-packages\django\template\base.py in render_annotated return self.render(context) ... ▶ Local vars e:\learn\learning_log\ll_env\lib\site-packages\django\template\defaulttags.py in render url = reverse(view_name, args=args, kwargs=kwargs, current_app=current_app) ... ▶ Local vars e:\learn\learning_log\ll_env\lib\site-packages\django\urls\base.py in reverse raise NoReverseMatch("%s is not a registered namespace" % key) ... ▶ Local vars Request information USER AnonymousUser GET No GET data POST No POST data FILES No FILES data COOKIES No cookie data META Variable Value #ENVTSLOGRBCSHELLEXT2372 '2554864' ALLUSERSPROFILE 'C:\\ProgramData' APPDATA 'C:\\Users\\ABCDC\\AppData\\Roaming' COMMONPROGRAMFILES 'C:\\Program Files\\Common Files' COMMONPROGRAMFILES(X86) 'C:\\Program Files (x86)\\Common Files' COMMONPROGRAMW6432 'C:\\Program Files\\Common Files' COMPUTERNAME 'ABCDC-PC' COMSPEC 'C:\\Windows\\system32\\cmd.exe' CONTENT_LENGTH '' CONTENT_TYPE 'text/plain' DJANGO_SETTINGS_MODULE 'learning_log.settings' FP_NO_HOST_CHECK 'NO' GATEWAY_INTERFACE 'CGI/1.1' HOMEDRIVE 'C:' HOMEPATH '\\Users\\ABCDC' HTTP_ACCEPT 'text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9' HTTP_ACCEPT_ENCODING 'gzip, deflate, br' HTTP_ACCEPT_LANGUAGE 'zh-CN,zh;q=0.9' HTTP_CACHE_CONTROL 'max-age=0' HTTP_CONNECTION 'keep-alive' HTTP_HOST '127.0.0.1:8000' HTTP_SEC_CH_UA '"Not_A Brand";v="99", "Google Chrome";v="109", "Chromium";v="109"' HTTP_SEC_CH_UA_MOBILE '?0' HTTP_SEC_CH_UA_PLATFORM '"Windows"' HTTP_SEC_FETCH_DEST 'document' HTTP_SEC_FETCH_MODE 'navigate' HTTP_SEC_FETCH_SITE 'none' HTTP_SEC_FETCH_USER '?1' HTTP_UPGRADE_INSECURE_REQUESTS '1' HTTP_USER_AGENT 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like ' 'Gecko) Chrome/109.0.0.0 Safari/537.36' LOCALAPPDATA 'C:\\Users\\ABCDC\\AppData\\Local' LOGONSERVER '\\\\ABCDC-PC' NUMBER_OF_PROCESSORS '4' OS 'Windows_NT' PATH 'e:\\learn\\learning_log\\ll_env\\Scripts;C:\\Python34\\;C:\\Python34\\Scripts;C:\\Program ' 'Files (x86)\\Intel\\iCLS Client\\;C:\\Program Files\\Intel\\iCLS ' 'Client\\;C:\\Windows\\system32;C:\\Windows;C:\\Windows\\System32\\Wbem;C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\;C:\\Program ' 'Files\\Intel\\WiFi\\bin\\;C:\\Program Files\\Common ' 'Files\\Intel\\WirelessCommon\\;C:\\Program Files\\Intel\\Intel(R) Management ' 'Engine Components\\DAL;C:\\Program Files\\Intel\\Intel(R) Management Engine ' 'Components\\IPT;C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine ' 'Components\\DAL;C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine ' 'Components\\IPT;C:\\Program Files\\Intel\\WiFi\\bin\\;C:\\Program ' 'Files\\Common Files\\Intel\\WirelessCommon\\;C:\\Wind\\WFC\\bin\\' PATHEXT '.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH;.MSC;.PY' PATH_INFO '/' PROCESSOR_ARCHITECTURE 'AMD64' PROCESSOR_IDENTIFIER 'Intel64 Family 6 Model 69 Stepping 1, GenuineIntel' PROCESSOR_LEVEL '6' PROCESSOR_REVISION '4501' PROGRAMDATA 'C:\\ProgramData' PROGRAMFILES 'C:\\Program Files' PROGRAMFILES(X86) 'C:\\Program Files (x86)' PROGRAMW6432 'C:\\Program Files' PROMPT '(ll_env) $P$G' PSMODULEPATH 'C:\\Windows\\system32\\WindowsPowerShell\\v1.0\\Modules\\' PUBLIC 'C:\\Users\\Public' QUERY_STRING '' REMOTE_ADDR '127.0.0.1' REMOTE_HOST '' REQUEST_METHOD 'GET' RUN_MAIN 'true' SCRIPT_NAME '' SERVER_NAME 'ABCDC-PC' SERVER_PORT '8000' SERVER_PROTOCOL 'HTTP/1.1' SERVER_SOFTWARE 'WSGIServer/0.2' SESSIONNAME 'Console' SHELLLAUNCH{A81BA54B-CCFE-4204-8E79-A68C0FDFA5CF} 'ShellExt' SYSTEMDRIVE 'C:' SYSTEMROOT 'C:\\Windows' TEMP 'C:\\Users\\ABCDC\\AppData\\Local\\Temp' TMP 'C:\\Users\\ABCDC\\AppData\\Local\\Temp' USERDOMAIN 'ABCDC-PC' USERNAME 'ABCDC' USERPROFILE 'C:\\Users\\ABCDC' VIRTUAL_ENV 'e:\\learn\\learning_log\\ll_env' WINDIR 'C:\\Windows' WINDOWS_TRACING_FLAGS '3' WINDOWS_TRACING_LOGFILE 'C:\\BVTBin\\Tests\\installpackage\\csilogfile.log' _OLD_VIRTUAL_PATH 'C:\\Python34\\;C:\\Python34\\Scripts;C:\\Program Files (x86)\\Intel\\iCLS ' 'Client\\;C:\\Program Files\\Intel\\iCLS ' 'Client\\;C:\\Windows\\system32;C:\\Windows;C:\\Windows\\System32\\Wbem;C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\;C:\\Program ' 'Files\\Intel\\WiFi\\bin\\;C:\\Program Files\\Common ' 'Files\\Intel\\WirelessCommon\\;C:\\Program Files\\Intel\\Intel(R) Management ' 'Engine Components\\DAL;C:\\Program Files\\Intel\\Intel(R) Management Engine ' 'Components\\IPT;C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine ' 'Components\\DAL;C:\\Program Files (x86)\\Intel\\Intel(R) Management Engine ' 'Components\\IPT;C:\\Program Files\\Intel\\WiFi\\bin\\;C:\\Program ' 'Files\\Common Files\\Intel\\WirelessCommon\\;C:\\Wind\\WFC\\bin\\' _OLD_VIRTUAL_PROMPT '$P$G' wsgi.errors <_io.TextIOWrapper name='<stderr>' mode='w' encoding='cp936'> wsgi.file_wrapper '' wsgi.input <_io.BufferedReader name=884> wsgi.multiprocess False wsgi.multithread True wsgi.run_once False wsgi.url_scheme 'http' wsgi.version (1, 0) Settings Using settings module learning_log.settings Setting Value ABSOLUTE_URL_OVERRIDES {} ADMINS [] ALLOWED_HOSTS [] APPEND_SLASH True AUTHENTICATION_BACKENDS ['django.contrib.auth.backends.ModelBackend'] AUTH_PASSWORD_VALIDATORS '********************' AUTH_USER_MODEL 'auth.User' BASE_DIR 'e:\\learn\\learning_log' CACHES {'default': {'BACKEND': 'django.core.cache.backends.locmem.LocMemCache'}} CACHE_MIDDLEWARE_ALIAS 'default' CACHE_MIDDLEWARE_KEY_PREFIX '********************' CACHE_MIDDLEWARE_SECONDS 600 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': {'ATOMIC_REQUESTS': False, 'AUTOCOMMIT': True, 'CONN_MAX_AGE': 0, 'ENGINE': 'django.db.backends.sqlite3', 'HOST': '', 'NAME': 'e:\\learn\\learning_log\\db.sqlite3', 'OPTIONS': {}, 'PASSWORD': '********************', 'PORT': '', 'TEST': {'CHARSET': None, 'COLLATION': None, 'MIRROR': None, 'NAME': None}, 'TIME_ZONE': None, 'USER': ''}} 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', 'django.contrib.staticfiles', 'learning_logs'] INTERNAL_IPS [] 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 {} LOGGING_CONFIG 'logging.config.dictConfig' LOGIN_REDIRECT_URL '/accounts/profile/' LOGIN_URL '/accounts/login/' LOGOUT_REDIRECT_URL None MANAGERS [] MEDIA_ROOT '' MEDIA_URL '' MESSAGE_STORAGE 'django.contrib.messages.storage.fallback.FallbackStorage' MIDDLEWARE ['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'] MIGRATION_MODULES {} MONTH_DAY_FORMAT 'F j' NUMBER_GROUPING 0 PASSWORD_HASHERS '********************' PASSWORD_RESET_TIMEOUT_DAYS '********************' PREPEND_WWW False ROOT_URLCONF 'learning_log.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_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 'learning_log.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.StaticFilesStorage' STATIC_ROOT None STATIC_URL '/static/' TEMPLATES [{'APP_DIRS': True, 'BACKEND': 'django.template.backends.django.DjangoTemplates', 'DIRS': [], '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_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 'learning_log.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.
05-16
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