Problem to connect Postgres in GitHub CI :econnrefused

Questions & Help Questions
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Hello Friends,
I have postgress error in my new project’s GitHub ci again.

Error

Error: 7.902 [error] GenServer #PID<0.521.0> terminating
##[debug]Dropping file value '/home/runner/work/ChatFCoin/ChatFCoin/14'. Path does not exist
Warning: ** (DBConnection.ConnectionError) tcp connect (localhost:5432): connection refused - :econnrefused
    (db_connection 2.4.2) lib/db_connection/connection.ex:100: DBConnection.Connection.connect/2
** (Mix) The database for ChatFCoin.Repo couldn't be dropped: killed
##[debug]Dropping file value '/home/runner/work/ChatFCoin/ChatFCoin/    (db_connection 2.4.2) lib/db_connection/connection.ex'. Path does not exist
Warning:     (connection 1.1.0) lib/connection.ex:622: Connection.enter_connect/5
    (stdlib 3.17) proc_lib.erl:226: :proc_lib.init_p_do_apply/3
##[debug]Dropping file value '/home/runner/work/ChatFCoin/ChatFCoin/    (stdlib 3.17) proc_lib.erl'. Path does not exist
Warning: Last message: nil
State: Postgrex.Protocol
Error: Process completed with exit code 1.
##[debug]Finishing: Source Compiling

error ref: https://github.com/shahryarjb/ChatFCoin/runs/6079339322?check_suite_focus=true

My GitHub CI:

https://github.com/shahryarjb/ChatFCoin/blob/master/.github/workflows/ci.yml

Do you have any idea why it is dropped?

Update

I forgot to put ENV=test in ci