error slot loginJika Anda mengalami kendala saat login, berikut beberapa solusi yang dapat dicoba: Lupa Password: Klik opsi Lupa Kata Sandi dan ikuti langkah-langkah pemulihan.This is a first attempt to work with snal slot AFTER I reinstalled my Qt Creator. Since I am adding a slot in device.cpp I do not get why the error is