Fatal error: Uncaught Error: Call to undefined function sg_get_machine_id() in /www/wwwroot/duke.ac.cn/config/1.php:3 Stack trace: #0 /www/wwwroot/duke.ac.cn/config/func.php(3): include() #1 /www/wwwroot/duke.ac.cn/config/database.php(40): require('...') #2 /www/wwwroot/duke.ac.cn/index.php(4): require('...') #3 {main} thrown in /www/wwwroot/duke.ac.cn/config/1.php on line 3