I have a really big problem with my magento installation, everything was working fine til today - now session in frontend and in backend is not working at all - i can't add product to cart or do anything else because form key is always mismatched with the one on the server and i can't log into admin panel because it just reloads the page when i try to log in.
I tried changing my session storage from db to files - no effect, my timezone is set correctly and there is no error in any of the log files, only through debbuging i found that the problem is with form key.
To be honest, i'm out of ideas as i tried to fix that all day long. Did someone had problem like that before? My setup:
Nginx server, php-fpm 7.4, Mysql v. 10.4.18-MariaDB
I have my installation on dedicated local web address, not localhost
I don't even know what other information i should provide as i cannot pinpoint the source of the problem, so if you need anything else, I will gladly share