@app.route("/reply/post", methods=["POST"])
def reply_post():
    name_receive = request.form['name_give']
    comment_receive = request.form['comment_give']
    doc = {
        'rank': int(rank),
        'name': name_receive,
        'comment': comment_receive
    }

    db.reply.insert_one(doc)

    return jsonify({'msg': '후기 작성 완료!'})

app.py post 부분

function save_comment(rank) {
    let name = $('#name').val()
    let comment = $('#comment').val()
    $.ajax({
        type: 'POST',
        url: `/reply/post/${rank}`,
        data: {name_give: name, comment_give: comment},
        success: function (response) {
            alert(response['msg'])
            window.location.reload()
        }
    })
}

index.html js 부분입니다.

"POST /reply/post/undefined HTTP/1.1" 404 -

라는 에러만 뜨는데 왜 이런 걸까요...