i run postgres on a non-default port. during installation, i am asked for the port and ez realizes if there is no postgres at a port. once i gave the correct port, installation continued and created the tables.

but at the end of install, when i go to the application frontend or backend, i get a postgres connection error. i had to manually add

ezpublish:
system:
ezdemo_site_group:
database:
port: 5433

in ezpublish/config/ezpublish.yml