Kylin Help is not available, look like
Then I analyse the web code, and find the problem.
The default help informations have been configured in the 'kylin-defaults.properties', as follow
The all links haven't been configured, but the web page will judge whether the link is empty, if the link is empty, the item under the 'Help' will not be showed.
So I modified the web code, if the link of help document is null, it will be discarded, not transformed to header page.