OpenLiteSpeed ​​users please check this: Setting Up Custom Headers how to fix?

Question

LiteSpeed ​​Web Server

LiteSpeed ​​Cache Settings in the Browser Cache Settings section
gives a notification:

NOTICE:
OpenLiteSpeed ​​users please check this: Setting Up Custom Headers

I looked at the instruction that the error refers to https://openlitespeed.org/kb/how-to-set-up-custom-...
In litespeed webadmin, I did everything that is described in the article, checked, the notification still hangs ..
via Google I looked to see if it works (in the headers section), there’s nothing there either