版本 求大佬教学!!!初次安装提示这个，怎么也过不去0.0

Server Error
count(): Parameter must be an array or an object that implements Countable

1. XenForo_Application::handlePhpError() in XenForo/Install/Model/Install.php at line 283
2. XenForo_Install_Model_Install->insertDefaultData() in XenForo/Install/Controller/Install.php at line 219
3. XenForo_Install_Controller_Install->actionStep2() in XenForo/FrontController.php at line 351
4. XenForo_FrontController->dispatch() in XenForo/FrontController.php at line 134
5. XenForo_FrontController->run() in /www/wwwroot/bbs.rust.cx/install/index.php at line 18