Why am I getting "Could not find a route with 1 elements" error for /<module> GET endpoint for Home module?

When I try to hit <site_url>/<module> GET url from Postman for Home module, I am getting error "no_method" with message "Could not find a route with 1 elements". For other modules like Notes, Calls, I am getting the response.

Any idea, why is it so?

The url I am hitting is <site_url>/rest/v11_8/Home.