Geekshop installation

Hello, I'm trying to install de Geekshop to my server. I uploaded the files, created the database but I get errors:

PDOException in PDOConnection.php line 43: SQLSTATE[HY000] [1045] Access denied for user ''@'localhost' (using password: NO)

PDOException in PDOConnection.php line 47: SQLSTATE[HY000] [1045] Access denied for user ''@'localhost' (using password: NO)

QueryException in Connection.php line 647: SQLSTATE[HY000] [1045] Access denied for user ''@'localhost' (using password: NO) (SQL: select * from information_schema.tables where table_schema = and table_name = settings)

Trying to add databse config as it says on the documentation, but doesn't find the .env file :(

Troubleshooting: If the install wizard does not come up you may need to add your database credentials first to your .env or application/.env file. You will need to add the APP_URL, DB_HOST, DB_DATABASE, DB_USERNAME, and DB_PASSWORD. Then try and visit your URL to see the install wizard.

Thanks!!