Post 404 not found ошибка

Моя задача — это отправить к серверу запрос с двумя параметрами login и password и распарсить ответ в JSON-формате, который он мне вернёт.

У меня есть самописный скрипт запущенный на сервере:

import sqlite3
from flask import Flask, jsonify, request, abort
import json

app = Flask('__name__')

def register(login, password, data=""):
    insert_data = (login, password, data)
    conn = sqlite3.connect("users.db")
    cursor = conn.cursor()

    x = cursor.execute(" SELECT * FROM users WHERE login=?", (login,)).fetchall()

    if not x:
        cursor.execute("INSERT INTO users VALUES (?,?,?)", insert_data)
        conn.commit()
        return "OK"
    return "Username is registered"

def login(login, password):
    insert_data = (login, password)
    conn = sqlite3.connect("users.db")
    cursor = conn.cursor()

    x = cursor.execute(" SELECT data FROM users WHERE login=? AND password=?", (login,password)).fetchone()

    if not x:
        return "Login or password is incorrect"
    return {"status": "logged in", "data": x[0]}

def delete(login, password):
    insert_data = (login, password)
    conn = sqlite3.connect("users.db")
    cursor = conn.cursor()

    x = cursor.execute(" SELECT data FROM users WHERE login=? AND password=?", (login,password)).fetchone()

    if not x:
        return "Login or password is incorrect"
    x = cursor.execute(" DELETE FROM users WHERE login=? AND password=?", (login,password)).fetchone()
    conn.commit()
    return "user deleted"

#=======================================================================================

@app.route('/register', methods=['POST'])
def write_reg():
    if not request.json:
        print(request.json)
        abort(404)

    user = {"login": request.json["login"],
              "password": request.json["password"],
              "data": request.json.get("data") or ""}
    return register(**user), 201

@app.route('/login', methods=['POST'])
def write_log():
    if not request.json:
        print(request.json)
        abort(404)

    user = {"login": request.json["login"],
              "password": request.json["password"]}
    return login(**user), 201

@app.route('/delete', methods=['POST'])
def write_del():
    if not request.json:
        print(request.json)
        abort(404)

    user = {"login": request.json["login"],
              "password": request.json["password"]}
    return delete(**user), 201

@app.errorhandler(404)
def not_found(error):
    return jsonify({'error': 'Not enought data'}), 404

if __name__ == '__main__':
    app.run(host='0.0.0.0',debug=True, threaded=True, port=5123)

POST-запрос отправляю вот таким образом:

HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url + "?" + Data);

request.Method = "POST";
request.Accept = "application/json";
request.UserAgent = "Mozilla/5.0....";

HttpWebResponse response = (HttpWebResponse)request.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream());
StringBuilder output = new StringBuilder();
output.Append(reader.ReadToEnd());
response.Close();

И получаю ошибку 404:

System.Net.WebException: "Удаленный сервер возвратил ошибку: (404) Не найден."

Подскажите, в чём дело? При отправке аналогичного запроса через консоль с помощью httpie всё проходит нормально и ответ возвращается:

HTTP/1.0 201 CREATED
Content-Length: 43
Content-Type: application/json
Date: Mon, 07 Sep 2020 09:49:10 GMT
Server: Werkzeug/0.16.0 Python/3.7.7

{
    "data": "",
    "status": "logged in"
}

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Once you have opened the .htaccess file with a text editor, simply insert this code.

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>
# END WordPress

Contact Your Hosting Provider

If neither of the solutions above has fixed the WordPress posts returning 404 error, then we recommend contacting your WordPress hosting provider. There may be an error on their end, or they might be able to help you troubleshoot the problem.

Please also see our guide on how to properly ask for WordPress support and get it.

Fix for Local Servers

If you are using a local server for testing purposes, then you will need to enable the rewrite_module in the Apache configuration of your MAMP, WAMP, or XXAMP site.

We hope this article helped you resolve the posts returning 404 error in WordPress. You may also want to see our guide to the most common WordPress errors and how to fix them, along with our expert picks for the best WordPress plugins to grow your site.

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