I have gone through countless posts, but can’t seem to find an answer for this. I am using apache on ubuntu 22.04. I can open ‘https://webapp.sb.sf.org’ but I just want the Alias to work i.e. ‘https://webapp’.When I open ‘https://webapp’ in browser, I get the following message on webpage Invalid host_name configuration. No error show up in error.log , nothing useful under access.log either even I set LogLevel to debug. DNS works fine, I can resolve both shortname ‘webapp’ and fqdn ‘webapp.sb.sf.org’. I have reverse proxy configured. Found few posts which says Alias can’t work with Reverse Proxy but the solutions didn’t work. This is my config