Notice: Undefined index: thumbnail_image in /home/.........../catalog/controller/extension/module/octabproducts.php on line 35Notice: Undefined index: thumbnail_image in /home/......../catalog/controller/extension/module/octabproducts.php on line 35

index de bu hatayı alıyorum. Rica etsem yardımcı olur musunuz?

Hatakodu satır;

<?php
class ControllerExtensionModuleOcTabProducts extends Controller {
    public function index($setting) {
        $this->load->language('extension/module/octabproducts');
                
        $this->load->model('catalog/product');
        $this->load->model('extension/module/ocproduct');
        $this->load->model('catalog/category');
        $this->load->model('tool/image');

        $this->load->model('localisation/language');
        
        $data['code'] = $this->session->data['language'];
        
        if (!$setting['limit']) {
            $setting['limit'] = 4;
        }
                
        $data['octabs'] = array();
        //echo '<pre>'; print_r($setting['octab']); die;
        foreach($setting['octab'] as $octab){
            $thumbnail_image = false;
            $results = array();
            if($octab['option'] == 0) {
                if (!empty($octab['productall'])) {
                    $products = array_slice($octab['productall'], 0, (int)$setting['limit']);
                    foreach ($products as $product_id) {
                        $results[] = $this->model_catalog_product->getProduct($product_id);
                    }
                }
            } else if ($octab['option']==1){
                if($octab['cate_id']) {
                    $category_info = $this->model_catalog_category->getCategory($octab['cate_id']);
                    
                    if ($category_info['thumbnail_image']) {
$thumbnail_image = $this->model_tool_image->resize($category_info['thumbnail_image'], 65, 65);
} else {
$thumbnail_image = $this->model_tool_image->resize('placeholder.png', 65, 65);
}