Error 500 after 1.9.4 update

Hi!
Few of my domains started acting weird after the Hestia auto update version 1.9.4.
This seems to only affect a domain that has multiple subdomains. Few subdomains gave error 500 when visiting the site and few just opened a blank page.

I read that someone else had some issues but they mentioned all PHP sites were crashing.
I have multiple Wordpress sites but they were working fine. Only that specific domain and subdomains were affected.

There was no log output when visiting the site. I was sure it was something related to PHP.
I am running PHP 8.3 but I noticed if I downgrade the version for the specific broken sites to version 8.1 so they start working

If there are no logs, you can’t know what the problem is, let alone fix it! It is recommended that you follow up on the submission!

Start checking the logs (/home/user/web/logs) to see, what’s wrong. Otherwise its impossible to help.

Yes so as I said, the issue is that nothing is hitting the logs.
Even if the browser says error 500 so it should be in the error logs but there’s nothing

Did you check /var/log/nginx/error.log or /var/log/apache2/error.log (I don’t know if you are using nginx or nginx+apache2)?

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I’ve been experiencing the same issue since the last update. The website started using PHP 8.1 instead of 7.4 by default without my intervention.

This caused problems. Switching PHP versions through the control panel appeared to work normally, but the website continued using PHP 8.1.

Stopping php-fpm 8.1 helped. However, the socket persisted in /var/run/…8.1

Once the socket was deleted, everything started working properly. Today, the same situation occurred again.

There are no errors in the logs.

Debian 11.11

P.S. Does PHP 8.3 exist for version 11.11? If so, can it be installed separately, as it didn’t appear with the updates?