There is an issue connecting to your database with your username/password, username:

Postgresql ActiveRecord::DatabaseConnectionError

There is an issue connecting to your database with your username/password, username: sanad. Please check your database configuration to ensure the username/password are valid.

PG::ConnectionBad: connection to server on socket "/var/run/postgresql/.s.PGSQL.5432" failed: FATAL: Peer authentication failed for user "user"

Here is the database code