Fatal error: Uncaught Error: Call to a member function closeConnect() on null in C:\xampp\htdocs\kelly.com.tw\application\myclass\BackRun.Class.php:23 Stack trace: #0 [internal function]: application\myclass\BackRun->__destruct() #1 {main} thrown in C:\xampp\htdocs\kelly.com.tw\application\myclass\BackRun.Class.php on line 23