Codeigniter forbidden you don't have permission to access this resource.

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PHP

CodeIgniter

Hello,

I have a CodeIgniter project it works fine when I use it on localhost (XAMPP) but when I run it online and submit the form below it gives me You don't have permission to access this resource.

Form is:

<form method="post" action="<?=site_url('quizsubmitted') ?>">
             <div class="card-body">
               <table id="example1" class="table table-bordered table-striped">
                   <thead>
                       <tr>
                           <th colspan="4" style="text-align: right;"><h4 id="time"><?=$qrow['duration'];?></h4></th>
                           <input type="hidden" name="quizid" value="<?=$qrow['quizid']; ?>">
                       </tr>
                   </thead>
                   <tbody>
                       <input type="hidden" name="studentid" value="<?=$studentid; ?>">
               <?php
               $i = 1;
                foreach($rows as $row) { ?>
                <tr>
                   <td colspan="4" ><label class="text-dark"> <?=$i; ?>. <?=$row['question'] ?></label></td>
                   <!-- <input type="hidden" name="qid[]" value="< ?=$row['qid']; ?>"> -->
                   <input type="hidden" name="question[<?=$i; ?>]" value="<?=$row['question'] ?>">
                </tr>
                   <tr>
                   <td>
                       <input type="radio" value="<?=$row['answer1'] ?>" class="form-check-input" name="answer[<?=$i; ?>]" id="answer1[<?=$i; ?>]">
                       <label class="form-check-label"><?=$row['answer1'] ?></label>
                   </td>
                       <td>
                       <input type="radio" value="<?=$row['answer2'] ?>" class="form-check-input" name="answer[<?=$i; ?>]" id="answer2[<?=$i; ?>]">
                       <label class="form-check-label"><?=$row['answer2'] ?></label>
                   </td>
                       <td>
                       <input type="radio" value="<?=$row['answer3'] ?>" class="form-check-input" name="answer[<?=$i; ?>]" id="answer3[<?=$i; ?>]">
                       <label class="form-check-label"><?=$row['answer3'] ?></label>
                   </td>
                       <td>
                       <input type="radio" value="<?=$row['answer4'] ?>" class="form-check-input" name="answer[<?=$i; ?>]" id="answer4[<?=$i; ?>]">
                       <label class="form-check-label"><?=$row['answer4'] ?></label>
                       <input type="hidden" name="correct[<?=$i; ?>]" value="<?=$row['correct'] ?>">
                   </td>
                </tr>
               <?php $i++; } ?>
                   </tbody>
               </table>
             </div>
             <div class="card-footer">
                 <button type="submit" class="btn btn-primary">Submit</button>
               </div>
             </form>

App.php

public string $baseURL = 'https://onlinequiz.ansicollege.net/';


   public array $allowedHostnames = [];


   public string $indexPage = '';

   public string $uriProtocol = 'REQUEST_URI';

Please help.

What I have tried:

htaccess is like below:

RewriteEngine on

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php/$1 [L]