Fatal error: Uncaught Error: Call to undefined function isMobile() in /www/wwwroot/taiheyixue/app/config.php:165 Stack trace: #0 /www/wwwroot/taiheyixue/app/web/Article.php(105): template() #1 /www/wwwroot/taiheyixue/app/web/Article.php(89): Article->output() #2 /www/wwwroot/taiheyixue/index.php(50): Article->view() #3 {main} thrown in /www/wwwroot/taiheyixue/app/config.php on line 165