Fatal error: Uncaught TypeError: mysqli_num_rows(): Argument #1 ($result) must be of type mysqli_result, bool given in /home/tvnborg/public_html/visualizar_fotos.php:89 Stack trace: #0 /home/tvnborg/public_html/visualizar_fotos.php(89): mysqli_num_rows(false) #1 {main} thrown in /home/tvnborg/public_html/visualizar_fotos.php on line 89