script kurdum kayıt olurken hata veriyor tüm alanları doldurup üye ol diyorum hata veriyor kodlar bunlar

<?php
defined('BASEPATH') OR exit('No direct script access allowed');
?>
<!DOCTYPE html>
<html lang="<?php echo $this->config->item("language"); ?>">
<head>
<meta charset="URF-8">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<meta name="description" content="">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<title><?php echo $this->lang->line("register"); ?> - <?php echo $this->config->item("site_name"); ?></title>
<link rel="shortcut icon" href="<?php echo base_url(); ?>assets/theme-5/images/favicon.png" type="image/png">
<link rel="stylesheet" href="<?php echo base_url(); ?>assets/theme-5/css/bootstrap.min.css">
<link rel="stylesheet" href="<?php echo base_url(); ?>assets/theme-5/css/font-awesome.min.css">
<link rel="stylesheet" href="<?php echo base_url(); ?>assets/theme-5/css/animate.min.css">
<link rel="stylesheet" href="<?php echo base_url(); ?>assets/theme-5/css/magnific-popup.css">
<link rel="stylesheet" href="<?php echo base_url(); ?>assets/theme-5/css/slick.css">
<link rel="stylesheet" href="<?php echo base_url(); ?>assets/theme-5/css/custom-animation.css">
<link rel="stylesheet" href="<?php echo base_url(); ?>assets/theme-5/css/default.css">
<link rel="stylesheet" href="<?php echo base_url(); ?>assets/theme-5/css/style.css">
<link rel="stylesheet" href="<?php echo base_url(); ?>assets/css/auth.css">
<script
src="https://www.google.com/recaptcha/api.js?render=<?php echo $this->config->item("recaptcha_site_key"); ?>">
</script>
<script>
grecaptcha.ready(function() {
grecaptcha.execute('<?php echo $this->config->item("recaptcha_site_key"); ?>', {
action: 'register'
}).then(function(token) {
var recaptchaResponse = document.getElementById('recaptchaResponse');
recaptchaResponse.value = token;
});
});
</script>
</head>
<body >
<div class="loader-wrap">
<div class="preloader"><div class="preloader-close"></div></div>
<div class="layer layer-one"><span class="overlay"></span></div>
<div class="layer layer-two"><span class="overlay"></span></div>
<div class="layer layer-three"><span class="overlay"></span></div>
</div>
<div class="off_canvars_overlay">
</div>
<div class="offcanvas_menu">
<div class="container-fluid">
<div class="row">
<div class="col-12">
<div class="offcanvas_menu_wrapper">
<div class="canvas_close">
<a href="javascript:void(0)"><i class="fa fa-times"></i></a>
</div>
<div class="offcanvas-brand text-center mb-40">
<a href="<?php echo base_url(); ?>"><img src="assets/theme-5/images/logo.png" alt=""></a>
</div>
<div id="menu" class="text-left ">
<ul class="offcanvas_main_menu">
<li class="menu-item-has-children active">
<a href="<?php echo base_url(); ?>">Anasayfa</a>
</li>
<li class="menu-item-has-children active">
<a href="/#nasilcalisir">Nasıl Çalışır</a>
</li>
<li class="menu-item-has-children active">
<a href="/#ozellik">Özellikler</a>
</li>
<li class="menu-item-has-children active">
<a href="/#sss">S.S.S</a>
</li>
<li class="menu-item-has-children active">
<a href="<?php echo base_url('blog'); ?>">Blog</a>
</li>
<li class="menu-item-has-children active">
<a href="/#iletisim">İletişim</a>
</li>
</ul>
</div>
<div class="offcanvas-social">
<ul class="text-center">
<li><a href="$"><i class="fab fa-facebook-f"></i></a></li>
<li><a href="$"><i class="fab fa-twitter"></i></a></li>
<li><a href="$"><i class="fab fa-instagram"></i></a></li>
<li><a href="$"><i class="fab fa-dribbble"></i></a></li>
</ul>
</div>
<div class="footer-widget-info">
<ul>
<li><a href="#"><i class="fa fa-envelope"></i> info@smsonayscripti.com</a></li>
<li><a href="#"><i class="fa fa-phone"></i> +(90) 850 480 4191</a></li>
<li><a href="#"><i class="fa fa-map-marker-alt"></i> İstanbul/Türkiye</a></li>
</ul>
</div>
</div>
</div>
</div>
</div>
</div>
<header class="appie-header-area appie-header-8-area appie-sticky ">
<div class="container">
<div class="header-nav-box header-nav-box-6">
<div class="row align-items-center">
<div class="col-lg-2 col-md-4 col-sm-5 col-6 order-1 order-sm-1">
<div class="appie-logo-box">
<a href="<?php echo base_url(); ?>">
<img src="assets/theme-5/images/logo.png" alt="">
</a>
</div>
</div>
<div class="col-lg-7 col-md-1 col-sm-1 order-3 order-sm-2">
<div class="appie-header-main-menu">
<ul>
<li>
<a href="<?php echo base_url(); ?>">Anasayfa</a>
</li>
<li>
<a href="/#nasilcalisir">Nasıl Çalışır</a>
</li>
<li>
<a href="/#ozellik">Özellikler</a>
</li>
<li>
<a href="/#sss">S.S.S</a>
</li>
<li>
<a href="<?php echo base_url('blog'); ?>">Blog</a>
</li>
<li><a href="/#iletisim">İletişim</a></li>
</ul>
</div>
</div>
<div class="col-lg-3 col-md-7 col-sm-6 col-6 order-2 order-sm-3">
<div class="appie-btn-box text-right">
<a class="login-btn" href="./login"><i class="fal fa-user"></i> Giriş</a>
<a class="main-btn ml-30" href="./register">Kayıt Ol</a>
<div class="toggle-btn ml-30 canvas_open d-lg-none d-block">
<i class="fa fa-bars"></i>
</div>
</div>
</div>
</div>
</div>
</div>
</header>
<section style=" background-image: url(./assets/theme-5/images/arkaplan.jpg); margin-top: 110px;" >
<div id="#joincss" class="container">
<div class="row pt-75 pb-75 justify-content-center">
<div class="col-md-6">
<div class="contact-form text-center">
<h4>Kayıt Ol</h4>
<p>Ücretsiz hesabınızla bugün başlayın.</p>
<form action="/ajax/register" method="POST" class="row justify-content-center">
<div class="col-md-8">
<input type="text" name="name" required placeholder="<?php echo $this->lang->line("enter_name"); ?>">
</div>
<div class="col-md-8">
<input type="email" name="email" required placeholder="<?php echo $this->lang->line("enter_email"); ?>">
</div>
<div class="col-md-8">
<input type="text" name="city" required placeholder="<?php echo $this->lang->line("enter_city"); ?>">
</div>
<div class="col-md-8">
<input type="text" name="address" required placeholder="<?php echo $this->lang->line("enter_address"); ?>">
</div>
<div class="col-md-8">
<input type="password" name="password" required placeholder="<?php echo $this->lang->line("enter_password"); ?>">
</div>
<div class="col-md-8">
<input type="password" name="password_again" required placeholder="<?php echo $this->lang->line("enter_password"); ?> (tekrar)">
</div>
<div class="col-md-8 text-mid">
<input type="submit" name="submit" value="<?php echo $this->lang->line("register"); ?>">
</div>
<div class="col-md-12 ">
<p style="justify-content: center;text-align: center;" >Hesabınız var mı? <a class="btn-link mt-15 " href="./login">Giriş Yap</a>
</p>
</div>
<input type="hidden" name="recaptcha_response" id="recaptchaResponse">
</form>
</div>
</div>
</div>
</div>
</section>
<section class="appie-footer-area appie-footer-about-area appie-footer-8-area" id="Iletisim">
<div class="container">
<div class="row">
<div class="col-lg-4 col-md-6">
<div class="footer-about-widget">
<div class="logo">
<a href="<?php echo base_url(); ?>"><img src="assets/theme-5/images/logo.png" alt=""></a>
</div>
<div class="social mt-30">
<ul>
<li><a href="#"><i class="fab fa-facebook-f"></i></a></li>
<li><a href="#"><i class="fab fa-twitter"></i></a></li>
<li><a href="#"><i class="fab fa-pinterest-p"></i></a></li>
<li><a href="#"><i class="fab fa-linkedin-in"></i></a></li>
</ul>
</div>
</div>
</div>
<div class="col-lg-2 col-md-6">
<div class="footer-navigation">
<h4 class="title">Sitemiz</h4>
<ul>
<li><a href="<?php echo base_url(); ?>">Anasayfa</a></li>
<li><a href="<?php echo base_url('blog'); ?>">Blog</a></li>
<li><a href="/#iletisim">İletişim</a></li>
</ul>
</div>
</div>
<div class="col-lg-3 col-md-6">
<div class="footer-navigation">
<h4 class="title">Destek</h4>
<ul>
<li><a href="/#nasilcalisir">Nasıl Çalışır</a></li>
<li><a href="/#ozellik">Özellikler</a></li>
<li><a href="/#sss">S.S.S</a></li>
</ul>
</div>
</div>
<div class="col-lg-3 col-md-6">
<div class="footer-widget-info">
<h4 class="title">İletişim</h4>
<ul>
<li><a href="#"><i class="fa fa-envelope"></i> info@smsonayscripti.com</a></li>
<li><a href="#"><i class="fa fa-phone"></i> +(90) 000 000 0000</a></li>
<li><a href="#"><i class="fa fa-map-marker-alt"></i> İstanbul/Türkiye</a></li>
</ul>
</div>
</div>
</div>
<div class="row">
<div class="col-lg-12">
<div class="footer-copyright pt-35">
<div class="copyright-text">
<p>Copyright © 2022 <?php echo $this->config->item("site_name"); ?>. Tüm Hakları Saklıdır</p>
</div>
</div>
</div>
</div>
</div>
</section>
<div class="back-to-top">
<a href="#"><i class="fal fa-arrow-up"></i></a>
</div>
<script src="<?php echo base_url(); ?>assets/theme-5/js/vendor/modernizr-3.6.0.min.js"></script>
<script src="<?php echo base_url(); ?>assets/theme-5/js/vendor/jquery-1.12.4.min.js"></script>
<script src="<?php echo base_url(); ?>assets/theme-5/js/bootstrap.min.js"></script>
<script src="<?php echo base_url(); ?>assets/theme-5/js/popper.min.js"></script>
<script src="<?php echo base_url(); ?>assets/theme-5/js/wow.js"></script>
<script src="<?php echo base_url(); ?>assets/theme-5/js/jquery.counterup.min.js"></script>
<script src="<?php echo base_url(); ?>assets/theme-5/js/waypoints.min.js"></script>
<script src="<?php echo base_url(); ?>assets/theme-5/js/TweenMax.min.js"></script>
<script src="<?php echo base_url(); ?>assets/theme-5/js/slick.min.js"></script>
<script src="<?php echo base_url(); ?>assets/theme-5/js/jquery.magnific-popup.min.js"></script>
<script src="<?php echo base_url(); ?>assets/theme-5/js/main.js"></script>
<script src="<?php echo base_url(); ?>assets/js/sweetalert2.all.min.js"></script>
<script src="<?php echo base_url(); ?>assets/js/auth.js"></script>
<?php echo $this->config->item("extra_footer"); ?>
</body>
</html>
ajax/register altındaki kodları görebilir miyiz. Sorun oradan kaynaklıdır.