Issue 403 Error Without Changes

[LuigiMdg]

Server operating system version

AlmaLinux 9

Plesk version and microupdate number

18.0.75

Hi, I've been having a problem with my website since this morning. It's inaccessible due to a 403 error, but I haven't made any updates or changes.
Looking at my dashboard, I saw that Plesk automatically updated to Obsidian 18.0.75.
I checked that the file and folder owner is correct, and the permissions seem fine.
The .htaccess hasn't changed for 2 years.
What could have happened?

What could have happened? What should I do to get the site up and running again?

 

[Sebahat.hadzhi]

Hello, @LuigiMdg . Does the issue occur for a single website or all websites on the server in question? If it's for a particular website only, please check the log files for it for further details. Also, have you tested the accessibility from a different network?