Error 500 when submitting form (Post, Ajax, Json, Javascript) to python

Python Help
1

I’m trying to send form field input values using POST, Ajax, Json and Javascript method to wsgiref Python, what problem am I running into with error 500 ? How can I send this data to python to process them without encountering an error, below are the codes (html, javascript and python) ?

<!DOCTYPE html>
<html>
    <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"/>
        <meta name="description" content=""/>
        <meta name="keywords" content=""/>

        <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/materialize/1.0.0/css/materialize.min.css">
        <style>
            .input-field input[type=email] + label { color: #455a64 !important; margin-left: 20px; margin-top: 15px; }
            .input-field input[type=email] { width: 362px; height: 70px; padding-left: 20px; padding-right: 20px;
            border: 1px solid #455a64 !important; box-shadow: 0 0 0 0 #455a64 !important; border-radius: 5px; }
            .input-field input[type=email]:focus + label { color: #0d47a1 !important; margin-left: 20px; margin-top: 20px; }
            .input-field input[type=email]:focus { border: 1px solid #0d47a1 !important; border-radius: 5px; font-size: 20px; }
        </style>
        <title>Webstrucs Form</title>
    </head>

    <body>
        <main>
            <div class="input-field">
                <input id="email" type="email" class="ws_input_email">
                <br>
                <a class="waves-effect waves-light blue darken-4 btn-large"></a>
            </div>
        </main>
        <script>
            const next = document.querySelector(".btn-large")
            const text = next.innerHTML = "Seguinte"

            next.onclick = function() {

                let ws_safe_email = document.querySelector(".ws_input_email").value

                const jsonData = {
                    "ws_safe_email": ws_safe_email
                }

                const jsonSend = JSON.stringify(jsonData)

                const ajax = new XMLHttpRequest()
                ajax.open("POST", "http://127.0.0.1:8080/", true)
                ajax.setRequestHeader("Content-Type", "application/json")
                ajax.send(jsonSend)
            }
        </script>
  </body>
</html>


from wsgiref.simple_server import make_server
# Module name : cgi -> ( https://docs.python.org/3/library/cgi.html#module-cgi )
import cgi, json


def apps(environ, start_response):

    # Function -> Capture the request method:
    v_mtd = environ["REQUEST_METHOD"]
    # Function -> Capture the request form data:
    v_inp = cgi.FieldStorage(environ["wsgi.input"], environ=environ)

    if v_mtd == "GET":

        # Acessa o arquivo static requisitado :
        o_file = open("index.html", "r")
        # Faz a leitura do arquivo :
        s_file = o_file.read()

        status = "200 OK"
        headers = [("Content-type", "text/html; charset=utf-8")]
        start_response(status, headers)

        # The returned object is going to be printed
        return [str(s_file).encode('utf-8')]

    elif v_mtd == "POST":

        ws_email_add = v_inp["ws_safe_email"]
        v_json = json.dumps(ws_email_add)
        return v_json

with make_server("", 8080, apps) as httpd:

    print("Serving on port 8080...")
    # Serve until process is killed
    httpd.serve_forever()