属性“debug”已锁定在更高级别的配置中

我试图上传一个MVC网站到服务器上,但它似乎只是不起作用。在上传mvc站点时,从来没有出现过如此奇怪的错误。 当我导航到网页时获取此消息。

The attribute 'debug' has been locked in a higher level configuration.

这是什么意思?

An application error occurred on the server. The current custom error settings for this application prevent the details of the application error from being viewed remotely (for security reasons). It could, however, be viewed by browsers running on the local server machine.

web的某些部分。我一直在胡闹的配置:

<customErrors mode="Off">
</customErrors>
<compilation debug="false" />