Phusion Passenger is currently not serving any applications

Thanks to: AntonAL

Ruby on Rails, Meteor, Node.js, Bitrix (Битрикс)

and 

https://stackoverflow.com/questions/33200648/phusion-passenger-is-currently-not-serving-any-applications

passenger_app_root /path/to/your/app/code; # <<< Point Passenger to application code