yii项目上传到linux上无法访问 [ 1.1 版本 ]

yii上传到Linux上访问不了，感觉是url解析不了，是怎么回事？请高手指点
CHttpException

Unable to resolve the request "site/error". (/var/www/yii/framework/web/CWebApplication.php:286)

#0 /var/www/yii/framework/base/CErrorHandler.php(331): CWebApplication->runController('site/error')
#1 /var/www/yii/framework/base/CErrorHandler.php(204): CErrorHandler->render('error', Array)
#2 /var/www/yii/framework/base/CErrorHandler.php(129): CErrorHandler->handleException(Object(CHttpException))
#3 /var/www/yii/framework/base/CApplication.php(732): CErrorHandler->handle(Object(CExceptionEvent))
#4 [internal function]: CApplication->handleException(Object(CHttpException))
#5 {main}