How can I fix this error A PHP Error was encountered Severity: 8192?

Question

CodeIgniter

Hello everyone, I'm studying here and at the rate I'm creating a site for watching movies, so my created site worked fine
, but I had to reinstall the system and then it gives this error, although I didn’t make any changes in the code, I copied the project from xampp before installation and after reinstalling put the project back and when you open the site, first there is an error, and then the site itself,
here is the error itself

A PHP Error was encountered
Severity: 8192

Message: Required parameter $limit follows optional parameter $slug

Filename: models/Films_model.php

Line Number: 9

Backtrace:

File: C:\xampp\htdocs\movieworld\application\core\MY_Controller.php
Line: 13
Function: model

File: C:\xampp\htdocs\movieworld\application\controllers\Main.php
Line: 8
Function: __construct

File: C:\xampp\htdocs\movieworld\index.php
Line: 315
Function: require_once

A PHP Error was encountered
Severity: 8192

Message: Required parameter $limit follows optional parameter $slug

Filename: models/Serials_model.php

Line Number: 9

Backtrace:

File: C:\xampp\htdocs\movieworld\application\controllers\Main.php
Line: 18
Function: model

File: C:\xampp\htdocs\movieworld\index.php
Line: 315
Function: require_once

and here are the lines themselves in the code

<?php

 class Films_model extends CI_Model {

     public function __construct() {
        $this->load->database();
    }

     public function getFilms($slug = FALSE, $limit, $type = 1) {
         if($slug === FALSE) {
             $query = $this->db
                 ->where('category_id', $type)
                 ->order_by('year', 'desc')
                 ->limit($limit)
                 ->get('movie');

             return $query->result_array();    
         }

         $query = $this->db->get_where('movie', array('slug'=>$slug));
         return $query->row_array();
     }