Traceback (most recent call last):
  File "C:\Users\jaewo\Desktop\sparta\project\mars\lib\site-packages\flask\app.py", line 2548, in __call__
    return self.wsgi_app(environ, start_response)
  File "C:\Users\jaewo\Desktop\sparta\project\mars\lib\site-packages\flask\app.py", line 2528, in wsgi_app
    response = self.handle_exception(e)
  File "C:\Users\jaewo\Desktop\sparta\project\mars\lib\site-packages\flask\app.py", line 2525, in wsgi_app
    response = self.full_dispatch_request()
  File "C:\Users\jaewo\Desktop\sparta\project\mars\lib\site-packages\flask\app.py", line 1822, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "C:\Users\jaewo\Desktop\sparta\project\mars\lib\site-packages\flask\app.py", line 1820, in full_dispatch_request
    rv = self.dispatch_request()
  File "C:\Users\jaewo\Desktop\sparta\project\mars\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\jaewo\Desktop\sparta\project\mars\mars\mars\app.py", line 34, in mars_post
    db.orders.insert_one(doc)
  File "C:\Users\jaewo\Desktop\sparta\project\mars\lib\site-packages\pymongo\collection.py", line 628, in insert_one
    self._insert_one(
  File "C:\Users\jaewo\Desktop\sparta\project\mars\lib\site-packages\pymongo\collection.py", line 569, in _insert_one
    self.__database.client._retryable_write(acknowledged, _insert_command, session)
  File "C:\Users\jaewo\Desktop\sparta\project\mars\lib\site-packages\pymongo\mongo_client.py", line 1475, in _retryable_write
    with self._tmp_session(session) as s:
  File "C:\Program Files\WindowsApps\PythonSoftwareFoundation.Python.3.8_3.8.2800.0_x64__qbz5n2kfra8p0\lib\contextlib.py", line 113, in __enter__
    return next(self.gen)
  File "C:\Users\jaewo\Desktop\sparta\project\mars\lib\site-packages\pymongo\mongo_client.py", line 1757, in _tmp_session
    s = self._ensure_session(session)
  File "C:\Users\jaewo\Desktop\sparta\project\mars\lib\site-packages\pymongo\mongo_client.py", line 1740, in _ensure_session
    return self.__start_session(True, causal_consistency=False)
  File "C:\Users\jaewo\Desktop\sparta\project\mars\lib\site-packages\pymongo\mongo_client.py", line 1685, in __start_session
    self._topology._check_implicit_session_support()
  File "C:\Users\jaewo\Desktop\sparta\project\mars\lib\site-packages\pymongo\topology.py", line 538, in _check_implicit_session_support
    self._check_session_support()
  File "C:\Users\jaewo\Desktop\sparta\project\mars\lib\site-packages\pymongo\topology.py", line 554, in _check_session_support
    self._select_servers_loop(
  File "C:\Users\jaewo\Desktop\sparta\project\mars\lib\site-packages\pymongo\topology.py", line 238, in _select_servers_loop
    raise ServerSelectionTimeoutError(
pymongo.errors.ServerSelectionTimeoutError: ac-ykieou2-shard-00-01.glrzspu.mongodb.net:27017: [WinError 10054] 현재 연결은 원격 호스트에 의해 강제로 끊겼습니다,ac-ykieou2-shard-00-02.glrzspu.mongodb.net:27017: [WinError 10054] 현재 연결은 원격 호스트에 의해 강제로 끊겼습니다,ac-ykieou2-shard-00-00.glrzspu.mongodb.net:27017: connection closed, Timeout: 30s, Topology Description: <TopologyDescription id: 63d4acca9dd1f80addc7c42f, topology_type: ReplicaSetNoPrimary, servers: [<ServerDescription ('ac-ykieou2-shard-00-00.glrzspu.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-ykieou2-shard-00-00.glrzspu.mongodb.net:27017: connection closed')>, <ServerDescription ('ac-ykieou2-shard-00-01.glrzspu.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-ykieou2-shard-00-01.glrzspu.mongodb.net:27017: [WinError 10054] 현재 연결은 원격 호스트에 의해 강제로 끊겼습니다')>, <ServerDescription ('ac-ykieou2-shard-00-02.glrzspu.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-ykieou2-shard-00-02.glrzspu.mongodb.net:27017: [WinError 10054] 현재 연결은 원격 호스트에 의해 강제로 끊겼습니다')>]>

from flask import Flask, render_template, request, jsonify

import certifi

ca = certifi.where()

app = Flask(__name__)

from pymongo import MongoClient

client = MongoClient('mongodb+srv://test:sparta@cluster0.glrzspu.mongodb.net/?retryWrites=true&w=majority',
                     tlsCAFile=ca)

db = client.test


@app.route('/')
def home():
    return render_template('index.html')


@app.route("/mars", methods=["POST"])
def mars_post():
    name_receive = request.form['name_give']
    address_receive = request.form['address_give']
    size_receive = request.form['size_give']

    doc = {
        'name': name_receive,
        'address': address_receive,
        'size': size_receive
    }

    db.orders.insert_one(doc)

    return jsonify({'msg': '주문 완료!'})


@app.route("/mars", methods=["GET"])
def web_mars_get():
    return jsonify({'msg': 'GET 연결 완료!'})


if __name__ == '__main__':
    app.run('0.0.0.0', port=5000, debug=True)

전부 나온 그대로 적어서 했고 보안 관련해서 필요한것도 따로 해뒀는데 계속해서 타임아웃에러가 뜹니다.