我的可道云是安装在智能路由上优盘上，一直都运行很好不知为何今天却出现以下错误，请问高手要如何解决？优盘上的i18n文件夹也有在
Fatal error: Uncaught Error: Class 'I18n' not found in /opt/wwwroot/Kodexplorer/config/setting.php:83 Stack trace: #0 /opt/wwwroot/Kodexplorer/config/config.php(104): include() #1 /opt/wwwroot/Kodexplorer/index.php(3): include('/opt/wwwroot/Ko...') #2 {main} thrown in /opt/wwwroot/Kodexplorer/config/setting.php on line 83