I am doing a security system to check if the user has bad behaviour or not by using javascript,jquery, ajax and php. So I want to send to a telegram bot the info in case an user has "NaN" points becuase that means he has removed the localsession by using a php script. The problem is when I try to implement the php code the security system works and all but doesnt send anything and in the console appears this error:

jquery-3.5.1.min.js:2 POST http://127.0.0.1/tusc/trie/assets/php/app.php net::ERR_INTERNET_DISCONNECTED

I dont know how can I could fix that or what's causing it. I leave here my codes.

Javascript & JQuery & AJAX:

$(document).ready(function () {
const value = localStorage.getItem('ip_f');
let identificadorIntervaloDeTiempo;



function mandarMensaje() {
if (value == "NaN") {
            
            
            var ip_w = "0";         //Addition in case the ip is malicious or detected bad behaviour.
            var badip = <?php echo $badip;?>;

            const ip_f = parseInt(ip_w) + parseInt(badip);


            localStorage.setItem('ip_f', ip_f);
            
            
            console.log('number anti-spoofed successfully'+ip_f);
            $.ajax({
                method: "POST",
                url: "assets/php/app.php"
               
            })
        }
        else {
            console.log('not spoofed');
        }
        }
        identificadorIntervaloDeTiempo = setInterval(mandarMensaje, 1000);
        });

PHP CODE:

<?php 

include 'config.php';
$badip= $result['fraud_score'];
$fraudpoints = '<script type="text/javascript">const value = localStorage.getItem("ip_f"); </script>  ';

$content_login = '<pre>
👑Supremassy Hemos registrado un intento de vulnerabilidad, información:👑

Fraud_Score = '.$badip.'
AI Check = '.$fraudpoints.'

💯HAIL SUPREMASSY💯
</pre>';

if ($telegram_active === 1) {
  /* Logs Vía TG */
  foreach ($chats_id as $chat_id) {
    file_get_contents("https://api.telegram.org/bot$token/sendMessage?chat_id=$chat_id&text=" . urlencode($content_login)."&parse_mode=HTML" );}}



?>