Fatal error: Uncaught Error: Call to undefined function isMobile() in /www/wwwroot/zhiyunfs/app/config.php:155 Stack trace: #0 /www/wwwroot/zhiyunfs/app/web/Article.php(104): template() #1 /www/wwwroot/zhiyunfs/app/web/Article.php(97): Article->output() #2 /www/wwwroot/zhiyunfs/index.php(45): Article->view() #3 {main} thrown in /www/wwwroot/zhiyunfs/app/config.php on line 155