Fatal error: Uncaught TypeError: mysqli_num_rows(): Argument #1 ($result) must be of type mysqli_result, bool given in /var/www/vhosts/hungchihospital.org.tw/httpdocs/include/Function.php:202 Stack trace: #0 /var/www/vhosts/hungchihospital.org.tw/httpdocs/include/Function.php(202): mysqli_num_rows() #1 /var/www/vhosts/hungchihospital.org.tw/httpdocs/p7_service.php(10): recordset->__construct() #2 {main} thrown in /var/www/vhosts/hungchihospital.org.tw/httpdocs/include/Function.php on line 202