console 로 찍으면 처음에 주문한거랑 두번째 주문한게 입력이 안되고 다른것이 나옵니다

작성한 코드 및 에러 메세지

  function show_order() {
        $.ajax({
            type: 'GET',
            url: '/mars',
            data: {},
            success: function (response) {
                console.log(response)
            }
        });
    }

    function save_order() {

        let name = $('#name').val()
        let address = $('#address').val()
        let size = $('#size').val()

        $.ajax({
            type: 'POST',
            url: '/mars',
            data: { name_give: name, address_give: address, size_give: size},
            success: function (response) {
                alert(response['msg'])
                window.location.reload()
            }
        });
    }
</script>

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


from pymongo import MongoClient
client = MongoClient("mongodb+srv://mire:dbsrjsdn1!@cluster0.e4w3e80.mongodb.net/?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': '주문완료'})

@app.route("/mars", methods=["GET"])
def web_mars_get():
    order_list = list(db.users.find({}, {'_id': False}))
    return jsonify({'orders': order_list})

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