/Users/gamsachoi/Desktop/sparta/projects/bucket/venv/bin/python /Users/gamsachoi/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://172.30.1.22:5000

Press CTRL+C to quit

 * Restarting with stat

 * Debugger is active!

 * Debugger PIN: 233-152-165

127.0.0.1 - - [15/Sep/2022 15:41:11] "GET / HTTP/1.1" 200 -

127.0.0.1 - - [15/Sep/2022 15:41:11] "GET /bucket HTTP/1.1" 200 -

127.0.0.1 - - [15/Sep/2022 15:41:46] "POST /bucket HTTP/1.1" 500 -

Traceback (most recent call last):

 File "/Users/gamsachoi/Desktop/sparta/projects/bucket/venv/lib/python3.8/site-packages/flask/app.py", line 2548, in __call__

  return self.wsgi_app(environ, start_response)

 File "/Users/gamsachoi/Desktop/sparta/projects/bucket/venv/lib/python3.8/site-packages/flask/app.py", line 2528, in wsgi_app

  response = self.handle_exception(e)

 File "/Users/gamsachoi/Desktop/sparta/projects/bucket/venv/lib/python3.8/site-packages/flask/app.py", line 2525, in wsgi_app

  response = self.full_dispatch_request()

 File "/Users/gamsachoi/Desktop/sparta/projects/bucket/venv/lib/python3.8/site-packages/flask/app.py", line 1822, in full_dispatch_request

  rv = self.handle_user_exception(e)

 File "/Users/gamsachoi/Desktop/sparta/projects/bucket/venv/lib/python3.8/site-packages/flask/app.py", line 1820, in full_dispatch_request

  rv = self.dispatch_request()

 File "/Users/gamsachoi/Desktop/sparta/projects/bucket/venv/lib/python3.8/site-packages/flask/app.py", line 1796, in dispatch_request

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

 File "/Users/gamsachoi/Desktop/sparta/projects/bucket/app.py", line 17, in bucket_post

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

 File "/Users/gamsachoi/Desktop/sparta/projects/bucket/venv/lib/python3.8/site-packages/pymongo/cursor.py", line 1248, in next

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

 File "/Users/gamsachoi/Desktop/sparta/projects/bucket/venv/lib/python3.8/site-packages/pymongo/cursor.py", line 1139, in _refresh

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

 File "/Users/gamsachoi/Desktop/sparta/projects/bucket/venv/lib/python3.8/site-packages/pymongo/mongo_client.py", line 1712, in _ensure_session

  return self.__start_session(True, causal_consistency=False)

 File "/Users/gamsachoi/Desktop/sparta/projects/bucket/venv/lib/python3.8/site-packages/pymongo/mongo_client.py", line 1657, in __start_session

  self._topology._check_implicit_session_support()

 File "/Users/gamsachoi/Desktop/sparta/projects/bucket/venv/lib/python3.8/site-packages/pymongo/topology.py", line 538, in _check_implicit_session_support

  self._check_session_support()

 File "/Users/gamsachoi/Desktop/sparta/projects/bucket/venv/lib/python3.8/site-packages/pymongo/topology.py", line 554, in _check_session_support

  self._select_servers_loop(

 File "/Users/gamsachoi/Desktop/sparta/projects/bucket/venv/lib/python3.8/site-packages/pymongo/topology.py", line 238, in _select_servers_loop

  raise ServerSelectionTimeoutError(

pymongo.errors.ServerSelectionTimeoutError: ac-ui0juvv-shard-00-01.un2yqkm.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108),ac-ui0juvv-shard-00-02.un2yqkm.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108),ac-ui0juvv-shard-00-00.un2yqkm.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108), Timeout: 30s, Topology Description: <TopologyDescription id: 6322c903b15fb9d897d9a451, topology_type: ReplicaSetNoPrimary, servers: [<ServerDescription ('ac-ui0juvv-shard-00-00.un2yqkm.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-ui0juvv-shard-00-00.un2yqkm.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108)')>, <ServerDescription ('ac-ui0juvv-shard-00-01.un2yqkm.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-ui0juvv-shard-00-01.un2yqkm.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108)')>, <ServerDescription ('ac-ui0juvv-shard-00-02.un2yqkm.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-ui0juvv-shard-00-02.un2yqkm.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108)')>]>

4주차부터 똑같이 따라하고 버튼 실행시키면 반응이 없고 저런 에러만 뜨는데 어떻게 해야하나요?