title: Server Error (500) on Django when template debug is set to False?
body: <p>I am seeing <code>Django 500 Error</code> when I set <code>DEBUG = False</code> in Django. I am using <code>Django 1.5 and Python 2.7</code>. I have also included <code>ALLOWED_HOSTS</code> in my template. Here's my full settings.py:</p>
  
  <pre><code># Django settings for genalytics project.
  from django.conf.global_settings import TEMPLATE_CONTEXT_PROCESSORS
  import djcelery
  import os
  __file__ = os.getcwd()
  
  ROOT_PATH = os.path.dirname(__file__)
  
  djcelery.setup_loader()
  
  #New in Django 1.5
  ALLOWED_HOSTS = ['localhost', '127.0.0.1:8000'] 
  
  DEBUG = False
  TEMPLATE_DEBUG = DEBUG
  
  ADMINS = (
       ('sachit', 'sachit.adhikari@zurelsoft.com')
  )
  
  
  BROKER_TRANSPORT = "sqlalchemy"
  BROKER_URL = "sqla+mysql://root:password@localhost/galaxy"
  
  
  MANAGERS = ADMINS
  
  DATABASES = {
      'default': {
          'ENGINE': 'django.db.backends.mysql', # Add 'postgresql_psycopg2', 'mysql', 'sqlite3' or 'oracle'.
          'NAME': 'galaxy',                      # Or path to database file if using sqlite3.
          'USER': 'root',                      # Not used with sqlite3.
          'PASSWORD': 'password',                  # Not used with sqlite3.
          'HOST': '',                      # Set to empty string for localhost. Not used with sqlite3.
          'PORT': ''                      # Set to empty string for default. Not used with sqlite3.
        }              
  }
  # Hosts/domain names that are valid for this site; required if DEBUG is False
  # See https://docs.djangoproject.com/en/1.5/ref/settings/#allowed-hosts
  
  # Local time zone for this installation. Choices can be found here:
  # http://en.wikipedia.org/wiki/List_of_tz_zones_by_name
  # although not all choices may be available on all operating systems.
  # In a Windows environment this must be set to your system time zone.
  TIME_ZONE = 'America/Chicago'
  
  # Language code for this installation. All choices can be found here:
  # http://www.i18nguy.com/unicode/language-identifiers.html
  LANGUAGE_CODE = 'en-us'
  
  SITE_ID = 1
  
  # If you set this to False, Django will make some optimizations so as not
  # to load the internationalization machinery.
  USE_I18N = True
  
  # If you set this to False, Django will not format dates, numbers and
  # calendars according to the current locale.
  USE_L10N = True
  
  # If you set this to False, Django will not use timezone-aware datetimes.
  USE_TZ = True
  
  # Absolute filesystem path to the directory that will hold user-uploaded files.
  # Example: "/var/www/example.com/media/"
  MEDIA_ROOT = ''
  
  # URL that handles the media served from MEDIA_ROOT. Make sure to use a
  # trailing slash.
  # Examples: "http://example.com/media/", "http://media.example.com/"
  MEDIA_URL = ''
  
  # Absolute path to the directory static files should be collected to.
  # Don't put anything in this directory yourself; store your static files
  # in apps' "static/" subdirectories and in STATICFILES_DIRS.
  # Example: "/var/www/example.com/static/"
  STATIC_ROOT = ''
  
  STATIC_URL = '/static/'
  
  # URL prefix for static files.
  # Example: "http://example.com/static/", "http://static.example.com/"
  
  AUTHENTICATION_BACKENDS = (
      'fileupload.backend.AuthBackend',
   )
  
  # Additional locations of static files
  STATICFILES_DIRS = (
  )
  # List of finder classes that know how to find static files in
  # various locations.
  STATICFILES_FINDERS = (
      'django.contrib.staticfiles.finders.FileSystemFinder',
      'django.contrib.staticfiles.finders.AppDirectoriesFinder',
  #    'django.contrib.staticfiles.finders.DefaultStorageFinder',
  )
  
  # Make this unique, and don't share it with anybody.
  SECRET_KEY = '$ec_7m$05ddhhc_cy(j-i^%70ochjmx*$0_o!$u1q9rkkd(ai$'
  
  # List of callables that know how to import templates from various sources.
  TEMPLATE_LOADERS = (
      'django.template.loaders.filesystem.Loader',
      'django.template.loaders.app_directories.Loader',
  #     'django.template.loaders.eggs.Loader',
  )
  
  TEMPLATE_CONTEXT_PROCESSORS += (
      'django.core.context_processors.request',
      'django.contrib.messages.context_processors.messages'
  )
  
  MIDDLEWARE_CLASSES = (
      'django.middleware.common.CommonMiddleware',
      'django.contrib.sessions.middleware.SessionMiddleware',
      'django.middleware.csrf.CsrfViewMiddleware',
      'django.contrib.auth.middleware.AuthenticationMiddleware',
      'django.contrib.messages.middleware.MessageMiddleware',
      'fileupload.middleware.AutoLogout'
      # Uncomment the next line for simple clickjacking protection:
      # 'django.middleware.clickjacking.XFrameOptionsMiddleware',
  )
  
  MESSAGE_STORAGE = 'django.contrib.messages.storage.cookie.CookieStorage'
  
  #Pagination Setting
  ENDLESS_PAGINATION_PREVIOUS_LABEL = '&lt;'
  ENDLESS_PAGINATION_NEXT_LABEL = '&gt;'
  
  ENDLESS_PAGINATION_FIRST_LABEL = '|&lt;'
  ENDLESS_PAGINATION_LAST_LABEL = '&gt;|'
  
  ROOT_URLCONF = 'genalytics.urls'
  
  SESSION_COOKIE_AGE = 30 * 60
  
  
  # Python dotted path to the WSGI application used by Django's runserver.
  WSGI_APPLICATION = 'genalytics.wsgi.application'
  
  TEMPLATE_DIRS = (
              os.path.join(ROOT_PATH, 'fileupload/templates'),
  
  
  )
  
  DESTINATION = '/home/zurelsoft/files/'
  
  AUTO_LOGOUT_DELAY = 30
  
  AUTH_USER_MODEL = 'fileupload.user'
  
  INSTALLED_APPS = (
      'django.contrib.auth',
      'django.contrib.contenttypes',
      'django.contrib.sessions',
      'django.contrib.sites',
      'django.contrib.messages',
      'django.contrib.staticfiles',
      'fileupload',
      'django.contrib.admin',
      'endless_pagination',
      'djcelery',
      'endless_pagination'
  )
  
  
  
  # A sample logging configuration. The only tangible logging
  # performed by this configuration is to send an email to
  # the site admins on every HTTP 500 error when DEBUG=False.
  # See http://docs.djangoproject.com/en/dev/topics/logging for
  # more details on how to customize your logging configuration.
  LOGGING = {
      'version': 1,
      'disable_existing_loggers': False,
      'filters': {
          'require_debug_false': {
              '()': 'django.utils.log.RequireDebugFalse'
          }
      },
  
      'handlers': {
          'mail_admins': {
              'level': 'ERROR',
              'filters': ['require_debug_false'],
              'class': 'django.utils.log.AdminEmailHandler'
          }
      },
      'loggers': {
          'django.request': {
              'handlers': ['mail_admins'],
              'level': 'ERROR',
              'propagate': True,
          },
      }
  }
  </code></pre>
  
  <p>What's wrong?</p>
  
  <p>Updated the logging as Ryu_hayabusa suggested and I am getting this error in the console:</p>
  
  <pre><code>Unhandled exception in thread started by &lt;bound method Command.inner_run of &lt;django.contrib.staticfiles.management.commands.runserver.Command object at 0x22e08d0&gt;&gt;
  Traceback (most recent call last):
    File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/runserver.py", line 114, in inner_run
      ipv6=self.use_ipv6, threading=threading)
    File "/usr/local/lib/python2.7/dist-packages/django/core/servers/basehttp.py", line 193, in run
      httpd.serve_forever()
    File "/usr/lib/python2.7/SocketServer.py", line 235, in serve_forever
      r, w, e = _eintr_retry(select.select, [self], [], [],
  AttributeError: 'NoneType' object has no attribute 'select'
  </code></pre>