Hestia Panel not working after apt Update && Upgrade

Hello!
I am running Ubuntu 24.04 (x86_64) with Hestia v1.9.3.
Everything was working fine until this morning, when I ran:
apt update && apt upgrade
During the upgrade, the system asked whether to overwrite some nginx configuration files. As far as I remember, I chose not to overwrite them.
As a result the websites are still physically present (files and databases are intact), but browsers now show an error: Did Not Connect: Potential Security Issue.
I renewed the Let’s Encrypt SSL certificates successfully, but the websites are still not working.

Thank you!

You would have a backup placed in /root/hst_backups/datetimefolder/conf, you can check and restore from there.

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It turned out that the file /etc/nginx/nginx.conf had been overwritten during the system update.
Restoring the original nginx.conf file brought the websites back online.

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