Ошибка 500 из-за ошибок в коде

 public function getVendorProduct ($vendor_id) {
    $query = $this->db->query("select vproduct_id from ".DB_PREFIX."vendor where vendor = ".$vendor_id);
    //$query = $this->db->query("select vendor, product_id, image, price, name from ".DB_RPEFIX."vendor, ".DB_PREFIX."product, ".DB_PREFIX."product_description where ".DB_RPEFIX."vendor.vendor = ".$vendor_id." and ".DB_RPEFIX."product_description.product_id = ".$qqqqq." and ".DB_PREFIX."product.product_id = ".$qqqqq);
    if ($query) {
            $count_id = count($query);
 
            $vproducts = array();
 
            for ($i=0; $i<$count_id; $i++) {
                $sql_products_data = $this->db->query("select product_id, image, price, name from ".DB_PREFIX."product, ".DB_PREFIX."product_description where ".DB_PREFIX."product_description.product_id = ".$query['vproduct_id']." and ".DB_PREFIX."product.product_id = ".$query['vproduct_id']);
            }
 
            foreach($sql_products_data as $result) {
                $vproducts['prod_id'] = $result['product_id'];
                $vproducts['prod_image'] = $result['image'];
                $vproducts['prod_price'] = $result['price'];
                $vproducts['prod_name'] = $result['name'];
            }
 
            return $vproducts;
        }
}

$vendor_product = $this->model_catalog_vendor->getVendorProduct($vendor_id);
        $data['products_list_vendor'][] = array();
        if($vendor_products) {
            foreach ($vendor_products as $result) {
                $data['products_list_vendor']['vproduct_id'] = $result['prod_id'];
                $data['products_list_vendor']['vproduct_image'] = $result['prod_image'];
                $data['products_list_vendor']['vproduct_price'] = $result['prod_price'];
                $data['products_list_vendor']['vproduct_name'] = $result['prod_name'];
 
            }
        }

<?php nfdghsdfd