파이몽고에 데이터 저장하려고 하는데 저장이 안되네요..뭐가 문제일까요..?

작성한 코드 및 에러 메세지

C:\Users\kwk22\Desktop\sparta_plus\project01\venv\Scripts\python.exe C:/Users/kwk22/Desktop/sparta_plus/project01/app.py 

Traceback (most recent call last):

 File "C:/Users/kwk22/Desktop/sparta_plus/project01/app.py", line 9, in <module>

  db.project01.insert_one(doc)

 File "C:\Users\kwk22\Desktop\sparta_plus\project01\venv\lib\site-packages\pymongo\collection.py", line 621, in insert_one

  self._insert_one(

 File "C:\Users\kwk22\Desktop\sparta_plus\project01\venv\lib\site-packages\pymongo\collection.py", line 562, in _insert_one

  self.__database.client._retryable_write(acknowledged, _insert_command, session)

 File "C:\Users\kwk22\Desktop\sparta_plus\project01\venv\lib\site-packages\pymongo\mongo_client.py", line 1448, in _retryable_write

  return self._retry_with_session(retryable, func, s, None)

 File "C:\Users\kwk22\Desktop\sparta_plus\project01\venv\lib\site-packages\pymongo\mongo_client.py", line 1321, in _retry_with_session

  return self._retry_internal(retryable, func, session, bulk)

 File "C:\Users\kwk22\Desktop\sparta_plus\project01\venv\lib\site-packages\pymongo\_csot.py", line 105, in csot_wrapper

  return func(self, *args, **kwargs)

 File "C:\Users\kwk22\Desktop\sparta_plus\project01\venv\lib\site-packages\pymongo\mongo_client.py", line 1353, in _retry_internal

  with self._get_socket(server, session) as sock_info:

 File "C:\Users\kwk22\AppData\Local\Programs\Python\Python38\lib\contextlib.py", line 113, in __enter__

  return next(self.gen)

 File "C:\Users\kwk22\Desktop\sparta_plus\project01\venv\lib\site-packages\pymongo\mongo_client.py", line 1189, in _get_socket

  with server.get_socket(handler=err_handler) as sock_info:

 File "C:\Users\kwk22\AppData\Local\Programs\Python\Python38\lib\contextlib.py", line 113, in __enter__

  return next(self.gen)

 File "C:\Users\kwk22\Desktop\sparta_plus\project01\venv\lib\site-packages\pymongo\pool.py", line 1406, in get_socket

  sock_info = self._get_socket(handler=handler)

 File "C:\Users\kwk22\Desktop\sparta_plus\project01\venv\lib\site-packages\pymongo\pool.py", line 1519, in _get_socket

  sock_info = self.connect(handler=handler)

 File "C:\Users\kwk22\Desktop\sparta_plus\project01\venv\lib\site-packages\pymongo\pool.py", line 1377, in connect

  sock_info.authenticate()

 File "C:\Users\kwk22\Desktop\sparta_plus\project01\venv\lib\site-packages\pymongo\pool.py", line 869, in authenticate

  auth.authenticate(creds, self)

 File "C:\Users\kwk22\Desktop\sparta_plus\project01\venv\lib\site-packages\pymongo\auth.py", line 549, in authenticate

  auth_func(credentials, sock_info)

 File "C:\Users\kwk22\Desktop\sparta_plus\project01\venv\lib\site-packages\pymongo\auth.py", line 475, in _authenticate_default

  return _authenticate_scram(credentials, sock_info, "SCRAM-SHA-1")

 File "C:\Users\kwk22\Desktop\sparta_plus\project01\venv\lib\site-packages\pymongo\auth.py", line 241, in _authenticate_scram

  res = sock_info.command(source, cmd)

 File "C:\Users\kwk22\Desktop\sparta_plus\project01\venv\lib\site-packages\pymongo\pool.py", line 766, in command

  return command(

 File "C:\Users\kwk22\Desktop\sparta_plus\project01\venv\lib\site-packages\pymongo\network.py", line 166, in command

  helpers._check_command_response(

 File "C:\Users\kwk22\Desktop\sparta_plus\project01\venv\lib\site-packages\pymongo\helpers.py", line 181, in _check_command_response

  raise OperationFailure(errmsg, code, response, max_wire_version)

pymongo.errors.OperationFailure: bad auth : Authentication failed., full error: {'ok': 0, 'errmsg': 'bad auth : Authentication failed.', 'code': 8000, 'codeName': 'AtlasError'}