Error

Traceback (most recent call last):
  File "manage.py", line 22, in <module>
    execute_from_command_line(sys.argv)
  File "C:\Python27\lib\site-packages\django\core\management\__init__.py", line 363, in execute_from_command_line
    utility.execute()
  File "C:\Python27\lib\site-packages\django\core\management\__init__.py", line 307, in execute
    settings.INSTALLED_APPS
  File "C:\Python27\lib\site-packages\django\conf\__init__.py", line 56, in __getattr__
    self._setup(name)
  File "C:\Python27\lib\site-packages\django\conf\__init__.py", line 41, in _setup
    self._wrapped = Settings(settings_module)
  File "C:\Python27\lib\site-packages\django\conf\__init__.py", line 110, in __init__
    mod = importlib.import_module(self.SETTINGS_MODULE)
  File "C:\Python27\lib\importlib\__init__.py", line 37, in import_module
    __import__(name)
  File "C:\Users\Jhon\Desktop\BaseDeDatos-Lab02\mysite\mysite\settings.py", line 107, in <module>
    connect(_MONGODB_NAME, host=_MONGODB_DATABASE_HOST)
  File "C:\Python27\lib\site-packages\mongoengine\connection.py", line 164, in connect
    return get_connection(alias)
  File "C:\Python27\lib\site-packages\mongoengine\connection.py", line 126, in get_connection
    raise ConnectionError("Cannot connect to database %s :\n%s" % (alias, e))
mongoengine.connection.ConnectionError: Cannot connect to database default :
command SON([('saslStart', 1), ('mechanism', 'SCRAM-SHA-1'), ('autoAuthorize', 1), ('payload', Binary('n,,n=root,
r=NTgwNDE5NzY5NzUx', 0))]) on namespace testDB.$cmd failed: Authentication failed.