Fatal error: Uncaught ArgumentCountError: mysqli_error() expects exactly 1 argument, 0 given in /home/librelej/public_html/ventana.php:31 Stack trace: #0 /home/librelej/public_html/ventana.php(31): mysqli_error() #1 {main} thrown in /home/librelej/public_html/ventana.php on line 31