Проверьте соединение PostgreSQL DB
psql -U kodekloud_aim -d kodekloud_db8 -h 127.0.0.1 -W ## Change name according to question
#### for the test on mode postgres u have
## \conninfo
## \l
## \dg+
## \q # to quit
psql -U kodekloud_gem -d kodekloud_db10 -h localhost -W
Glamorous Giraffe