Отказано в доступе в модуле OpenCart 3 при сохранении в меню администратора

Когда я пытаюсь сохранить изменения в моем модуле, он говорит, что разрешение отклонено.
Я уверен, что это из файла контроллера.
Я включил все разрешения для группы пользователей: «Администратор».
Но я на самом деле не знаю, откуда это взялось, так как это мой первый модуль для Opencart 3. Я считаю, что это связано с разделом post, потому что он появляется только после сохранения.

Код из файла контроллера:

<?php
class Controllerextensionmodulecartreminder extends Controller {
private $error = array(); // This is used to set the errors, if any.

public function index() {
// Loading the language file of cart reminder
$this->load->language('extension/module/cartreminder');

// Set the title of the page to the heading title in the Language file i.e., Cart Reminder
$this->document->setTitle($this->language->get('heading_title'));

// Load the Setting Model  (All of the OpenCart Module & General Settings are saved using this Model )
$this->load->model('setting/setting');

// Start If: Validates and check if data is coming by save (POST) method
if (($this->request->server['REQUEST_METHOD'] == 'POST') && $this->validate()) {
// Parse all the coming data to Setting Model to save it in database.
$this->model_setting_setting->editSetting('cartreminder', $this->request->post);

// To display the success text on data save
$this->session->data['success'] = $this->language->get('text_success');

// Redirect to the Module Listing
$this->response->redirect($this->url->link('extension/module', 'user_token=' . $this->session->data['user_token'], 'SSL'));
}

// Assign the language data for parsing it to view
$data['heading_title'] = $this->language->get('heading_title');

$data['text_edit']    = $this->language->get('text_edit');
$data['text_enabled'] = $this->language->get('text_enabled');
$data['text_disabled'] = $this->language->get('text_disabled');
$data['text_content_top'] = $this->language->get('text_content_top');
$data['text_content_bottom'] = $this->language->get('text_content_bottom');
$data['text_column_left'] = $this->language->get('text_column_left');
$data['text_column_right'] = $this->language->get('text_column_right');

$data['entry_code'] = $this->language->get('entry_code');
$data['entry_layout'] = $this->language->get('entry_layout');
$data['entry_position'] = $this->language->get('entry_position');
$data['entry_status'] = $this->language->get('entry_status');
$data['entry_sort_order'] = $this->language->get('entry_sort_order');

$data['button_save'] = $this->language->get('button_save');
$data['button_cancel'] = $this->language->get('button_cancel');
$data['button_add_module'] = $this->language->get('button_add_module');
$data['button_remove'] = $this->language->get('button_remove');

// This Block returns the warning if any
if (isset($this->error['warning'])) {
$data['error_warning'] = $this->error['warning'];
} else {
$data['error_warning'] = '';
}

// This Block returns the error code if any
if (isset($this->error['code'])) {
$data['error_code'] = $this->error['code'];
} else {
$data['error_code'] = '';
}

// Making of Breadcrumbs to be displayed on site
$data['breadcrumbs'] = array();
$data['breadcrumbs'][] = array(
'text'      => $this->language->get('text_home'),
'href'      => $this->url->link('common/home', 'user_token=' . $this->session->data['user_token'], 'SSL'),
'separator' => false
);
$data['breadcrumbs'][] = array(
'text'      => $this->language->get('text_module'),
'href'      => $this->url->link('extension/module', 'user_token=' . $this->session->data['user_token'], 'SSL'),
'separator' => ' :: '
);
$data['breadcrumbs'][] = array(
'text'      => $this->language->get('heading_title'),
'href'      => $this->url->link('extension/module/cartreminder', 'user_token=' . $this->session->data['user_token'], 'SSL'),
'separator' => ' :: '
);

$data['action'] = $this->url->link('extension/module/cartreminder', 'user_token=' . $this->session->data['user_token'], 'SSL'); // URL to be directed when the save button is pressed

$data['cancel'] = $this->url->link('extension/module', 'user_token=' . $this->session->data['user_token'], 'SSL'); // URL to be redirected when cancel button is pressed

// This block checks, if the hello world text field is set it parses it to view otherwise get the default
// hello world text field from the database and parse it
if (isset($this->request->post['cartreminder_text_field'])) {
$data['cartreminder_text_field'] = $this->request->post['cartreminder_text_field'];
} else {
$data['cartreminder_text_field'] = $this->config->get('cartreminder_text_field');
}

// This block parses the status (enabled / disabled)
if (isset($this->request->post['cartreminder_status'])) {
$data['cartreminder_status'] = $this->request->post['cartreminder_status'];
} else {
$data['cartreminder_status'] = $this->config->get('cartreminder_status');
}

$data['header'] = $this->load->controller('common/header');
$data['column_left'] = $this->load->controller('common/column_left');
$data['footer'] = $this->load->controller('common/footer');
$this->response->setOutput($this->load->view('extension/module/cartreminder', $data));
}
/* Function that validates the data when Save Button is pressed */
protected function validate() {

// Block to check the user permission to manipulate the module
if (!$this->user->hasPermission('modify', 'extension/module/cartreminder')) {
$this->error['warning'] = $this->language->get('error_permission');
}

// Block to check if the cartreminder_text_field is properly set to save into database,
// otherwise the error is returned
if (!$this->request->post['cartreminder_text_field']) {
$this->error['code'] = $this->language->get('error_code');
}
/* End Block*/

// Block returns true if no error is found, else false if any error detected
if (!$this->error) {
return true;
} else {
return false;
}
}
}