this is what I have in my ssl.conf
Redirect / https://real-domain/console
ProxyPass /console https://backend:<port>/console
ProxyPassReverse /console https://backend:<port>/console
I've forgotten that SSL Configurations should be put inside ssl.conf and not httpd.conf.
That was where the error came from, once putting into ssl.conf, everything solves.
Now i'm cracking my head on how to make HTTPS listen to one IP only, but with several domain names, any idea?