404 not found in codeigniter 3 - php

Question

This is controller College.php:
<?php
defined('BASEPATH') OR exit('No direct script access allowed');
class College extends CI_Controller
{
public function __construct() {
parent::__construct();
$this->load->model('College_model');
}
public function index() {
$this->load->view('college_view');
}
function get_autocomplete() {
if (isset($_GET['term'])) {
$result = $this->college_model->search_college($_GET['term']);
if (count($result) > 0) {
foreach ($result as $row) {
$arr_result[] = array(
'name' => $college_name,
'description' => $row->college_description,
);
echo json_encode($arr_result);
}
}
}
}
}
?>
This is College_model.php
<?php
class College_model extends CI_Model
{
function get_all_college() {
$result = $this->db->get('college');
return $result;
}
function search_college($name) {
$this->db->like('college_name', $name, 'both');
$this->db->order_by('college_name', 'ASC');
$this->db->limit(10);
return $this->db->get('college')->result();
}
}
?>
This is view page college_view.php
<div class="tab-content py-3 px-3 px-sm-0 m-auto" id="nav-tabContent">
<div class="tab-pane fade show active" id="nav-home" role="tabpanel" aria-labelledby="nav-home-tab">
<form action="http://vufind.carli.illinois.edu/vf-aru/Search/Home" method="get" role="search" target="vufind" name="searchForm">
<div class="input-group lrcInputs">
<input value="1" name="start_over" type="hidden">
<label></label>
<input class="form-control" id="college" name="college" type="text" placeholder="Search for books, ebooks, & media">
<div class="input-group-btn">
<button class="btn btn-success lrcSearchButton" type="submit"><i class="fa fa-search" aria-hidden="true"></i></button>
</div>
</div>
<script type="text/javascript">
$(document).ready(function () {
$('#college').autocomplete({
source: "<?php echo site_url('college/get_autocomplete'); ?>",
select: function (event, ui) {
$('[name="college"]').val(ui.item.name);
}
});
});
</script>
How to remove the error of 404 not found. if need more code or file i will help.
i m getting error in chrome console as GET http://localhost/apluscollege/college/get_autocomplete?term=as 404 (not found) jquery.min.js
i m making a search bar using autocomplete using jQuery ana ajax