4-8 화성땅 공동구매 post 연습 : 코드 짜고 마지막 확인할 때 오류

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4-8 화성땅 공동구매 post 연습 : 코드 짜고 마지막 확인할 때 오류

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답변 완료

* 겪고 있는 문제 상황을 최대한 자세하게 작성해주세요.

* 문제 해결을 위해 어떤 시도를 해보았는지 구체적으로 함께 알려주세요.

서버랑 클라이언트 잘 따라하고 마지막에 DB에 잘 올라가는지 확인하려고

로컬호스트 페이지 새로고침하면 이렇게 뜹니다

이거때문에 지금 같은 부분만 세번째인데요..

아예 처음부터 app.py랑 index.html 싹 다 다시 넣고 찬찬히 따라해도 안됩니다ㅜㅜ

튜터님과 제가 다른 부분은 dbprac.py에서 복붙한 파이몽고 DB부분밖에 없는거 같은데 (DB부분 할때도 방화벽때문에 코드가 좀 달라진다고 즉문즉답에서 해결했어요..)

문제가 무엇일까요..

혹시나 하고

from pymongo import MongoClient
import certifi
ca = certifi.where()

client = MongoClient('mongodb+srv://test:sparta@cluster0.xdxpzua.mongodb.net/Cluster0?retryWrites=true&w=majority', tlsCAFile=ca)
db = client.dbsparta

여기에서

import certifi

ca = certifi.where()

지우고 제 db url 뒤에 붙어있는 tisCAFile=ca 이것도 지우고 실행해봤는데

일단 로컬호스트 화면은 뜹니다

대신 데이터가 안 넘어가요..ㅋㅋㅋㅋ 환장..

출근하기 전에 해보려고 하다가 이게 왠 날벼락인지

이건 사이트연결 에러 났을 때 상황입니다

from flask import Flask, render_template, request, jsonify
app = Flask(__name__)

from pymongo import MongoClient
import certifi
ca = certifi.where()

client = MongoClient('mongodb+srv://test:sparta@cluster0.xdxpzua.mongodb.net/Cluster0?retryWrites=true&w=majority', tlsCAFile=ca)
db = client.dbsparta


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

@app.route("/mars", methods=["POST"])
def web_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.mars.insert_one(doc)

    return jsonify({'msg': 'POST 연결 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)

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet"
        integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js"
        integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM"
        crossorigin="anonymous"></script>

    <link href="https://fonts.googleapis.com/css2?family=Gowun+Batang:wght@400;700&display=swap" rel="stylesheet">

    <title>선착순 공동구매</title>

    <style>
        * {
            font-family: 'Gowun Batang', serif;
            color: white;
        }

        body {
            background-image: linear-gradient(0deg, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://cdn.aitimes.com/news/photo/202010/132592_129694_3139.jpg');
            background-position: center;
            background-size: cover;
        }

        h1 {
            font-weight: bold;
        }

        .order {
            width: 500px;
            margin: 60px auto 0px auto;
            padding-bottom: 60px;
        }

        .mybtn {
            width: 100%;
        }

        .order > table {
            margin : 40px 0;
            font-size: 18px;
        }

        option {
            color: black;
        }
    </style>
    <script>
        $(document).ready(function () {
            show_order();
        });
        function show_order() {
            $.ajax({
                type: 'GET',
                url: '/mars',
                data: {},
                success: function (response) {
                    alert(response['msg'])
                }
            });
        }
        function save_order() {
            let name = $('#name').val()
            let adress = $('#address').val()
            let size = $('#size').val()

            $.ajax({
                type: 'POST',
                url: '/mars',
                data: { name_give: name, adress_give: adress, size_give: size },
                success: function (response) {
                    alert(response['msg'])
                    window.location.reload()
                }
            });
        }
    </script>
</head>
<body>
    <div class="mask"></div>
    <div class="order">
        <h1>화성에 땅 사놓기!</h1>
        <h3>가격: 평 당 500원</h3>
        <p>
            화성에 땅을 사둘 수 있다고?<br/>
            앞으로 백년 간 오지 않을 기회. 화성에서 즐기는 노후!
        </p>
        <div class="order-info">
            <div class="input-group mb-3">
                <span class="input-group-text">이름</span>
                <input id="name" type="text" class="form-control">
            </div>
            <div class="input-group mb-3">
                <span class="input-group-text">주소</span>
                <input id="address" type="text" class="form-control">
            </div>
            <div class="input-group mb-3">
                <label class="input-group-text" for="size">평수</label>
                <select class="form-select" id="size">
                  <option selected>-- 주문 평수 --</option>
                  <option value="10평">10평</option>
                  <option value="20평">20평</option>
                  <option value="30평">30평</option>
                  <option value="40평">40평</option>
                  <option value="50평">50평</option>
                </select>
              </div>
              <button onclick="save_order()" type="button" class="btn btn-warning mybtn">주문하기</button>
        </div>
        <table class="table">
            <thead>
              <tr>
                <th scope="col">이름</th>
                <th scope="col">주소</th>
                <th scope="col">평수</th>
              </tr>
            </thead>
            <tbody>
              <tr>
                <td>홍길동</td>
                <td>서울시 용산구</td>
                <td>20평</td>
              </tr>
              <tr>
                <td>임꺽정</td>
                <td>부산시 동구</td>
                <td>10평</td>
              </tr>
              <tr>
                <td>세종대왕</td>
                <td>세종시 대왕구</td>
                <td>30평</td>
              </tr>
            </tbody>
          </table>
    </div>
</body>
</html>

/Users/lynn/Desktop/sparta/projects/mars/venv/bin/python /Users/lynn/Desktop/sparta/projects/mars/app.py

Traceback (most recent call last):

File "/Users/lynn/Desktop/sparta/projects/mars/app.py", line 5, in <module>

import certifi

ModuleNotFoundError: No module named 'certifi'

종료 코드 1(으)로 완료된 프로세스

이 아래는 db 관련 코드를 지우고나서 입니다

from flask import Flask, render_template, request, jsonify
app = Flask(__name__)

from pymongo import MongoClient

client = MongoClient('mongodb+srv://test:sparta@cluster0.xdxpzua.mongodb.net/Cluster0?retryWrites=true&w=majority')
db = client.dbsparta


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

@app.route("/mars", methods=["POST"])
def web_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.mars.insert_one(doc)

    return jsonify({'msg': 'POST 연결 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)

여기까지 하면 문제가 없는데

요 코드를 가지고 로컬호스트에서 이름-주소-평수 넣고 주문하기 누르면 먹통입니다

당연히 클라우드에도 안올라가고요

겁나 많은 뭔가가 떴는데 일단 올려봅니당..

/Users/lynn/Desktop/sparta/projects/mars/venv/bin/python /Users/lynn/Desktop/sparta/projects/mars/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://192.168.50.109:5000

Press CTRL+C to quit

* Restarting with stat

* Debugger is active!

* Debugger PIN: 771-892-666

127.0.0.1 - - [22/Dec/2022 11:52:52] "POST /mars HTTP/1.1" 500 -

Traceback (most recent call last):

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

return self.wsgi_app(environ, start_response)

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

response = self.handle_exception(e)

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

response = self.full_dispatch_request()

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

rv = self.handle_user_exception(e)

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

rv = self.dispatch_request()

File "/Users/lynn/Desktop/sparta/projects/mars/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/lynn/Desktop/sparta/projects/mars/app.py", line 25, in web_mars_post

db.mars.insert_one(doc)

File "/Users/lynn/Desktop/sparta/projects/mars/venv/lib/python3.8/site-packages/pymongo/collection.py", line 628, in insert_one

self._insert_one(

File "/Users/lynn/Desktop/sparta/projects/mars/venv/lib/python3.8/site-packages/pymongo/collection.py", line 569, in _insert_one

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

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

s = self._ensure_session(session)

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

self._topology._check_implicit_session_support()

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

self._check_session_support()

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

self._select_servers_loop(

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

raise ServerSelectionTimeoutError(

pymongo.errors.ServerSelectionTimeoutError: ac-gcrua5p-shard-00-00.xdxpzua.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108),ac-gcrua5p-shard-00-02.xdxpzua.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108),ac-gcrua5p-shard-00-01.xdxpzua.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: 63a3c61576cbae2c4ecb7df9, topology_type: ReplicaSetNoPrimary, servers: [<ServerDescription ('ac-gcrua5p-shard-00-00.xdxpzua.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-gcrua5p-shard-00-00.xdxpzua.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108)')>, <ServerDescription ('ac-gcrua5p-shard-00-01.xdxpzua.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-gcrua5p-shard-00-01.xdxpzua.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108)')>, <ServerDescription ('ac-gcrua5p-shard-00-02.xdxpzua.mongodb.net', 27017) server_type: Unknown, rtt: None, error=AutoReconnect('ac-gcrua5p-shard-00-02.xdxpzua.mongodb.net:27017: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1108)')>]>

127.0.0.1 - - [22/Dec/2022 11:52:53] "POST /mars HTTP/1.1" 500 -

Traceback (most recent call last):

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

return self.wsgi_app(environ, start_response)

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

response = self.handle_exception(e)

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

response = self.full_dispatch_request()

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

rv = self.handle_user_exception(e)

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

rv = self.dispatch_request()

File "/Users/lynn/Desktop/sparta/projects/mars/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/lynn/Desktop/sparta/projects/mars/app.py", line 25, in web_mars_post

db.mars.insert_one(doc)

File "/Users/lynn/Desktop/sparta/projects/mars/venv/lib/python3.8/site-packages/pymongo/collection.py", line 628, in insert_one

self._insert_one(

File "/Users/lynn/Desktop/sparta/projects/mars/venv/lib/python3.8/site-packages/pymongo/collection.py", line 569, in _insert_one

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

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

s = self._ensure_session(session)

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

self._topology._check_implicit_session_support()

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

self._check_session_support()

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

self._select_servers_loop(

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

raise ServerSelectionTimeoutError(

127.0.0.1 - - [22/Dec/2022 11:52:54] "POST /mars HTTP/1.1" 500 -

Traceback (most recent call last):

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

return self.wsgi_app(environ, start_response)

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

response = self.handle_exception(e)

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

response = self.full_dispatch_request()

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

rv = self.handle_user_exception(e)

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

rv = self.dispatch_request()

File "/Users/lynn/Desktop/sparta/projects/mars/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/lynn/Desktop/sparta/projects/mars/app.py", line 25, in web_mars_post

db.mars.insert_one(doc)

File "/Users/lynn/Desktop/sparta/projects/mars/venv/lib/python3.8/site-packages/pymongo/collection.py", line 628, in insert_one

self._insert_one(

File "/Users/lynn/Desktop/sparta/projects/mars/venv/lib/python3.8/site-packages/pymongo/collection.py", line 569, in _insert_one

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

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

s = self._ensure_session(session)

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

self._topology._check_implicit_session_support()

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

self._check_session_support()

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

self._select_servers_loop(

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

raise ServerSelectionTimeoutError(

127.0.0.1 - - [22/Dec/2022 11:52:54] "POST /mars HTTP/1.1" 500 -

Traceback (most recent call last):

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

return self.wsgi_app(environ, start_response)

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

response = self.handle_exception(e)

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

response = self.full_dispatch_request()

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

rv = self.handle_user_exception(e)

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

rv = self.dispatch_request()

File "/Users/lynn/Desktop/sparta/projects/mars/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/lynn/Desktop/sparta/projects/mars/app.py", line 25, in web_mars_post

db.mars.insert_one(doc)

File "/Users/lynn/Desktop/sparta/projects/mars/venv/lib/python3.8/site-packages/pymongo/collection.py", line 628, in insert_one

self._insert_one(

File "/Users/lynn/Desktop/sparta/projects/mars/venv/lib/python3.8/site-packages/pymongo/collection.py", line 569, in _insert_one

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

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

s = self._ensure_session(session)

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

self._topology._check_implicit_session_support()

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

self._check_session_support()

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

self._select_servers_loop(

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

raise ServerSelectionTimeoutError(

127.0.0.1 - - [22/Dec/2022 11:52:54] "POST /mars HTTP/1.1" 500 -

Traceback (most recent call last):

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

return self.wsgi_app(environ, start_response)

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

response = self.handle_exception(e)

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

response = self.full_dispatch_request()

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

rv = self.handle_user_exception(e)

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

rv = self.dispatch_request()

File "/Users/lynn/Desktop/sparta/projects/mars/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/lynn/Desktop/sparta/projects/mars/app.py", line 25, in web_mars_post

db.mars.insert_one(doc)

File "/Users/lynn/Desktop/sparta/projects/mars/venv/lib/python3.8/site-packages/pymongo/collection.py", line 628, in insert_one

self._insert_one(

File "/Users/lynn/Desktop/sparta/projects/mars/venv/lib/python3.8/site-packages/pymongo/collection.py", line 569, in _insert_one

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

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

s = self._ensure_session(session)

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

self._topology._check_implicit_session_support()

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

self._check_session_support()

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

self._select_servers_loop(

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

raise ServerSelectionTimeoutError(

127.0.0.1 - - [22/Dec/2022 11:52:54] "POST /mars HTTP/1.1" 500 -

Traceback (most recent call last):

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

return self.wsgi_app(environ, start_response)

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

response = self.handle_exception(e)

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

response = self.full_dispatch_request()

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

rv = self.handle_user_exception(e)

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

rv = self.dispatch_request()

File "/Users/lynn/Desktop/sparta/projects/mars/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/lynn/Desktop/sparta/projects/mars/app.py", line 25, in web_mars_post

db.mars.insert_one(doc)

File "/Users/lynn/Desktop/sparta/projects/mars/venv/lib/python3.8/site-packages/pymongo/collection.py", line 628, in insert_one

self._insert_one(

File "/Users/lynn/Desktop/sparta/projects/mars/venv/lib/python3.8/site-packages/pymongo/collection.py", line 569, in _insert_one

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

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

s = self._ensure_session(session)

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

self._topology._check_implicit_session_support()

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

self._check_session_support()

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

self._select_servers_loop(

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

raise ServerSelectionTimeoutError(

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