Fatal error: Uncaught Error: Class "think\admin\Model" not found in /www/wwwroot/wicv2408/public/wicvtouch/extend/model/CooperFileModel.php:6 Stack trace: #0 {main} thrown in /www/wwwroot/wicv2408/public/wicvtouch/extend/model/CooperFileModel.php on line 6