Fatal error: Uncaught TypeError: mysqli_num_rows(): Argument #1 ($result) must be of type mysqli_result, bool given in /var/www/vhosts/restaurantelaventacuenca.com/httpdocs/libs/functions/security.php:137 Stack trace: #0 /var/www/vhosts/restaurantelaventacuenca.com/httpdocs/libs/functions/security.php(137): mysqli_num_rows() #1 /var/www/vhosts/restaurantelaventacuenca.com/httpdocs/index.php(47): compruebaId() #2 {main} thrown in /var/www/vhosts/restaurantelaventacuenca.com/httpdocs/libs/functions/security.php on line 137