아래는 에러 로그입니다.

작성한 코드 및 에러 메세지

C:\Users\user\Desktop\sparta\projects\bucket\venv\Scripts\python.exe C:/Users/user/Desktop/sparta/projects/bucket/app.py

 * Serving Flask app 'app'

 * Debug mode: on

WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.

 * Running on all addresses (0.0.0.0)

 * Running on http://127.0.0.1:5000

 * Running on http://172.30.1.62:5000

Press CTRL+C to quit

 * Restarting with stat

 * Debugger is active!

 * Debugger PIN: 822-237-379

127.0.0.1 - - [14/Jan/2023 16:12:16] "GET / HTTP/1.1" 200 -

127.0.0.1 - - [14/Jan/2023 16:12:16] "GET /bucket HTTP/1.1" 200 -

127.0.0.1 - - [14/Jan/2023 16:12:59] "POST /bucket HTTP/1.1" 500 -

Traceback (most recent call last):

 File "C:\Users\user\Desktop\sparta\projects\bucket\venv\lib\site-packages\flask\app.py", line 2548, in __call__

  return self.wsgi_app(environ, start_response)

 File "C:\Users\user\Desktop\sparta\projects\bucket\venv\lib\site-packages\flask\app.py", line 2528, in wsgi_app

  response = self.handle_exception(e)

 File "C:\Users\user\Desktop\sparta\projects\bucket\venv\lib\site-packages\flask\app.py", line 2525, in wsgi_app

  response = self.full_dispatch_request()

 File "C:\Users\user\Desktop\sparta\projects\bucket\venv\lib\site-packages\flask\app.py", line 1822, in full_dispatch_request

  rv = self.handle_user_exception(e)

 File "C:\Users\user\Desktop\sparta\projects\bucket\venv\lib\site-packages\flask\app.py", line 1820, in full_dispatch_request

  rv = self.dispatch_request()

 File "C:\Users\user\Desktop\sparta\projects\bucket\venv\lib\site-packages\flask\app.py", line 1796, in dispatch_request

  return self.ensure_sync(self.view_functions[rule.endpoint])(**view_args)

 File "C:\Users\user\Desktop\sparta\projects\bucket\app.py", line 19, in bucket_post

  bucketList = list(db.bucket.find({}, {'_id': False}))

 File "C:\Users\user\Desktop\sparta\projects\bucket\venv\lib\site-packages\pymongo\cursor.py", line 1248, in next

  if len(self.__data) or self._refresh():

 File "C:\Users\user\Desktop\sparta\projects\bucket\venv\lib\site-packages\pymongo\cursor.py", line 1139, in _refresh

  self.__session = self.__collection.database.client._ensure_session()

 File "C:\Users\user\Desktop\sparta\projects\bucket\venv\lib\site-packages\pymongo\mongo_client.py", line 1740, in _ensure_session

  return self.__start_session(True, causal_consistency=False)

 File "C:\Users\user\Desktop\sparta\projects\bucket\venv\lib\site-packages\pymongo\mongo_client.py", line 1685, in __start_session

  self._topology._check_implicit_session_support()

 File "C:\Users\user\Desktop\sparta\projects\bucket\venv\lib\site-packages\pymongo\topology.py", line 538, in _check_implicit_session_support

  self._check_session_support()

 File "C:\Users\user\Desktop\sparta\projects\bucket\venv\lib\site-packages\pymongo\topology.py", line 554, in _check_session_support

  self._select_servers_loop(

 File "C:\Users\user\Desktop\sparta\projects\bucket\venv\lib\site-packages\pymongo\topology.py", line 238, in _select_servers_loop

  raise ServerSelectionTimeoutError(

pymongo.errors.ServerSelectionTimeoutError: ac-yxi5ysr-shard-00-01.om07jwv.mongodb.net:27017: [WinError 10054] 현재 연결은 원격 호스트에 의해 강제로 끊겼습니다,ac-yxi5ysr-shard-00-02.om07jwv.mongodb.net:27017: connection closed,ac-yxi5ysr-shard-00-00.om07jwv.mongodb.net:27017: connection closed, Timeout: 30s, Topology Description: <TopologyDescription id: 63c255caf47fdfcf8e15bb59, topology_type: ReplicaSetNoPrimary, servers: [<ServerDescription ('ac-yxi5ysr-shard-00-00.om07jwv.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-yxi5ysr-shard-00-00.om07jwv.mongodb.net:27017: connection closed')>, <ServerDescription ('ac-yxi5ysr-shard-00-01.om07jwv.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-yxi5ysr-shard-00-01.om07jwv.mongodb.net:27017: [WinError 10054] 현재 연결은 원격 호스트에 의해 강제로 끊겼습니다')>, <ServerDescription ('ac-yxi5ysr-shard-00-02.om07jwv.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-yxi5ysr-shard-00-02.om07jwv.mongodb.net:27017: connection closed')>]>

127.0.0.1 - - [14/Jan/2023 16:13:19] "POST /bucket HTTP/1.1" 500 -