Call to a member function fetch() on a non-object

<?php
 
class Product
{
 
    const SHOW_BY_DEFAULT = 10;
 
    /**
     * Returns an array of products
     */
    public static function getLatestProducts($count = self::SHOW_BY_DEFAULT)
    {
        $count = intval($count);
        $db = Db::getConnection();
        $productsList = array();
 
        $result = $db->query('SELECT id, name, price, image, is_new FROM product '
                . 'WHERE status = "1"'
                . 'ORDER BY id DESC '                
                . 'LIMIT ' . $count);
 
        $i = 0;
        while ($row = $result->fetch()) {
            $productsList[$i]['id'] = $row['id'];
            $productsList[$i]['name'] = $row['name'];
            $productsList[$i]['image'] = $row['image'];
            $productsList[$i]['price'] = $row['price'];
            $productsList[$i]['is_new'] = $row['is_new'];
            $i++;
        }
 
        return $productsList;
    }
}

class Product
{
 
    const SHOW_BY_DEFAULT = 10;
 
    /**
     * Returns an array of products
     */
    public static function getLatestProducts($count = self::SHOW_BY_DEFAULT)
    {
        $count = intval($count);
        $db = Db::getConnection();
        $productsList = array();
 
        $result = $db->query('SELECT id, name, price, image, is_new FROM product '
                . 'WHERE status = "1" '
                . 'ORDER BY id DESC '                
                . 'LIMIT ' . $count);
 
        $i = 0;
        while ($row = $result->fetch()) {
            $productsList[$i]['id'] = $row['id'];
            $productsList[$i]['name'] = $row['name'];
            $productsList[$i]['image'] = $row['image'];
            $productsList[$i]['price'] = $row['price'];
            $productsList[$i]['is_new'] = $row['is_new'];
            $i++;
        }
 
        return $productsList;
        
        echo var_dump($result);
    }
}
 
product1 = new Product;
product1->getLatestProducts();