16 hours ago, artuuuuuuuuuurs said:I guess that was my mistake. Imported tables and replaced all of them with values from old backup. (Reason for it was a crash) when Debug is enabled it doesn't help as log in fields just disappear and nothing happens. Only thing in console it shows error 500 (Internal Server Error)
Well, you need to find what's wrong.
A SQL error should trigger debug prompt. Error 500 without any other information is most likely due to something wrong with core files/server configuration.
Do you have the same config ? (PHP Version, Apache).
Did you do a fresh install or just a backup image from server ?
PS logs errors, you should take a look at it to understand root cause. Or ask for some help and give access to server.