      """
      def __init__(self, table):
          self.db_table = table
          self.app_label = 'django_cache'
          self.module_name = 'cacheentry'
          self.verbose_name = 'cache entry'
          self.verbose_name_plural = 'cache entries'
          self.object_name =  'CacheEntry'
          self.abstract = False
          self.managed = True
 
</s> remove         self.module_name, self.verbose_name = None, None
 </s> add         self.model_name, self.verbose_name = None, None </s> remove         self.module_name = self.object_name.lower()
 </s> add         self.model_name = self.object_name.lower() </s> remove     def __init__(self, user, module_name):
        self.user, self.module_name = user, module_name
 </s> add     def __init__(self, user, app_label):
        self.user, self.app_label = user, app_label </s> remove         # If the db_table wasn't provided, use the app_label + module_name.
 </s> add         # If the db_table wasn't provided, use the app_label + model_name.
        self.model_name = 'cacheentry'
      """
      def __init__(self, table):
          self.db_table = table
          self.app_label = 'django_cache'
        self.model_name = 'cacheentry'
          self.verbose_name = 'cache entry'
          self.verbose_name_plural = 'cache entries'
          self.object_name =  'CacheEntry'
          self.abstract = False
          self.managed = True
keep keep keep keep replace keep keep keep keep keep
 Fixed #19689 -- Renamed `Model._meta.module_name` to `model_name`. 
django/core/cache/backends/db.py