How do I do it? I've made auth rest, but when I enter the username and password, it's correct, but when I try it in Postman, there's an error like the one I screenshot, does anyone know how to fix it so it works, because I try to follow YouTube, it's still the same, it's still not working. it works, the way it works is that when I give the owner the username and password the apex application just starts, well I don't want to give the owner the username and password so I make my own username and password but it doesn't work even
