It's a warning but it looks like your connected to the database container app=#

Thank you su much for the help but...what i have to do now? I'm stuck in app-# and i can't send any command like "symfony console make:entity Conference". Sorry i'm very bad

you're inside postgres container. I can't explain what docker containers are because this topic is to wide. Symfony binary only works from you host so you have to exit the container or open a new terminal tab.

symfony run psql runs the postgres shell, to allow you to run SQL queries. You need to stop it (with Ctrl+C) to exit from it.

Right, it opens the postgres shell. Sorry for mixing things and the container stuff (too much docker in my life 😄).

On Ubuntu 22.04, I got PostgreSQL client 14, while the version in Docker is 15. When running symfony run psql, there was a warning about the version mismatch and that some functionality of psql might not work.

Command symfony run pg_dump totally failed with an error due to the version mismatch.

To install PostgreSQL client 15, I had to follow these steps:

sudo apt remove postgresql-client-14
sudo mkdir /etc/apt/keyrings
sudo wget --output-document /etc/apt/keyrings/postgresql.asc https://www.postgresql.org/media/keys/ACCC4CF8.asc
echo 'deb [arch=amd64 signed-by=/etc/apt/keyrings/postgresql.asc] http://apt.postgresql.org/pub/repos/apt jammy-pgdg main' | sudo tee -a /etc/apt/sources.list.d/apt_postgresql_org_pub_repos_apt.list > /dev/null
sudo apt update
sudo apt install postgresql-client-15