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3-11 mongodb 연결하기에 코드를 입력하고 실행하기를 눌렀는데 code:0이 아닌 code:1이 나오는데 왜그런건가요

from pymongo import MongoClient
client = MongoClient('mongodb+srv://test:<sparta>@cluster0.okqyxhg.mongodb.net/Cluster0?retryWrites=true&w=majority')
db = client.dbsparta

doc = {
    'name':'bob',
    'age':27
}

db.users.insert_one(doc)

/Users/user/Desktop/sparta/pythonprac/venv/bin/python /Users/user/Desktop/sparta/pythonprac/dbprac.py 

Traceback (most recent call last):

 File "/Users/user/Desktop/sparta/pythonprac/dbprac.py", line 10, in <module>

  db.users.insert_one(doc)

 File "/Users/user/Desktop/sparta/pythonprac/venv/lib/python3.8/site-packages/pymongo/collection.py", line 621, in insert_one

  self._insert_one(

 File "/Users/user/Desktop/sparta/pythonprac/venv/lib/python3.8/site-packages/pymongo/collection.py", line 562, in _insert_one

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

 File "/Users/user/Desktop/sparta/pythonprac/venv/lib/python3.8/site-packages/pymongo/mongo_client.py", line 1475, in _retryable_write

  with self._tmp_session(session) as s:

 File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/contextlib.py", line 113, in __enter__

  return next(self.gen)

 File "/Users/user/Desktop/sparta/pythonprac/venv/lib/python3.8/site-packages/pymongo/mongo_client.py", line 1757, in _tmp_session

  s = self._ensure_session(session)

 File "/Users/user/Desktop/sparta/pythonprac/venv/lib/python3.8/site-packages/pymongo/mongo_client.py", line 1740, in _ensure_session

  return self.__start_session(True, causal_consistency=False)

 File "/Users/user/Desktop/sparta/pythonprac/venv/lib/python3.8/site-packages/pymongo/mongo_client.py", line 1685, in __start_session

  self._topology._check_implicit_session_support()

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

  self._check_session_support()

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

  self._select_servers_loop(

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

  raise ServerSelectionTimeoutError(

pymongo.errors.ServerSelectionTimeoutError: ac-jzrb0bn-shard-00-01.okqyxhg.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108),ac-jzrb0bn-shard-00-02.okqyxhg.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108),ac-jzrb0bn-shard-00-00.okqyxhg.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: 636b4f97021d7b879f75f3d4, topology_type: ReplicaSetNoPrimary, servers: [<ServerDescription ('ac-jzrb0bn-shard-00-00.okqyxhg.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-jzrb0bn-shard-00-00.okqyxhg.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108)')>, <ServerDescription ('ac-jzrb0bn-shard-00-01.okqyxhg.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-jzrb0bn-shard-00-01.okqyxhg.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108)')>, <ServerDescription ('ac-jzrb0bn-shard-00-02.okqyxhg.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-jzrb0bn-shard-00-02.okqyxhg.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108)')>]>

종료 코드 1(으)로 완료된 프로세스