Laravel login and registration not working.

[DomTheDon12]

Hi! I'm new at laravel, so please be kind! I have a laravel project with laravel authentication and suddenly, without touching the code login doesn't work for any users like they're passing the wrong email and password pair, and also registration doesn't work. In my phpmyadmin's user table all provider and provider id fields are null for some reason. So everything worked fine for months and now it doesn't. Thanks for any help!