Banco não instalado: Access denied / falha MySQL. Testado: 127.0.0.1: SQLSTATE[HY000] [1045] Access denied for user 'u524908943_rbmercadinho'@'127.0.0.1' (using password: YES) | localhost: SQLSTATE[HY000] [1045] Access denied for user 'u524908943_rbmercadinho'@'localhost' (using password: YES) — Confira DB_USERNAME, DB_PASSWORD e DB_DATABASE no .env. Em Hostinger use DB_HOST=localhost.