下载内核放进去就报错

Fatal error: Uncaught Error: Failed opening required '/log/www/dayrui/CodeIgniter/Init.php' (include_path='.:') in /log/www/dayrui/Fcms/Init.php:491 Stack trace: #0 /log/www/index.php(48): require() #1 /log/www/admin.php(9): require('...') #2 {main} thrown in /log/www/dayrui/Fcms/Init.php on line 491

我现在dayrui目录下有：

CodeIgniter72

Fcms

我下载了ThinkPHP 放进去后 网站就报错，后台 前台都进不去，。而且哪怕我把ThinkPHP  删除后依然报错 

这怎么切换内核