from flask import Flask, render_template, request, jsonify

app = Flask(__name__)

from pymongo import MongoClient
import certifi

ca = certifi.where();

client = MongoClient(
    'mongodb+srv://limjungho:!lim828285@cluster0.fy7rw6j.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': '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)

dbprac.py에서 아래 코드를 가져온 뒤에 위와 같이 'http://localhost:5000/'에 오류가 발생됩니다.

도와주세요~!

from pymongo import MongoClient
import certifi

ca = certifi.where();

client = MongoClient(
    'mongodb+srv://limjungho:!lim828285@cluster0.fy7rw6j.mongodb.net/cluster0?retryWrites=true&w=majority')
db = client.dbsparta