Fatal error: Uncaught TypeError: mysqli_num_rows(): Argument #1 ($result) must be of type mysqli_result, bool given in /home/ictspeci/cartxbd.shop/shop.php:72 Stack trace: #0 /home/ictspeci/cartxbd.shop/shop.php(72): mysqli_num_rows() #1 {main} thrown in /home/ictspeci/cartxbd.shop/shop.php on line 72