HestiaCP 500 Error After Auto Updates – VPS Becomes Unreachable After Reboot

Community Support General Questions
1

Hello,

We currently manage around 10 VPS servers running HestiaCP on Debian 12.

For the past 2–3 years, we have been experiencing a recurring issue after HestiaCP automatic updates.

After an update, the websites hosted on the server continue to work normally, but when we try to access the HestiaCP panel on port 8083, we receive an “Internal Server Error (500)” page and cannot log in to the control panel.

The error page displays the following message:

“An internal server error has occurred. Please contact the administrator.”

A screenshot of the error page is attached below.

In the past, we would simply reboot the VPS to restore access to the HestiaCP panel. After the reboot, everything would return to normal and the panel would become accessible again.

However, after the most recent update, rebooting the VPS has caused a much more serious problem on several servers.

The sequence of events is:

  1. HestiaCP updates automatically.

  2. Websites continue to work normally.

  3. Accessing the HestiaCP panel on port 8083 results in a “500 Internal Server Error”.

  4. Since we cannot access the panel, we reboot the VPS.

  5. After the reboot, the VPS becomes completely unreachable.

After the reboot:

  • HestiaCP is inaccessible.

  • SSH is unavailable.

  • The server IP does not respond.

  • Ping fails completely.

  • The VPS appears to be completely offline.

This has already happened on 3–4 VPS servers after the latest update.

All affected servers are running Debian 12.

Has anyone experienced a similar issue or have any suggestions on what could be causing this behavior?

Thank you.

Screenshot of the error page attached below.

Internal-Server-Error-05-31-2026_10_14_AM
Internal-Server-Error-05-31-2026_10_14_AM1021×550 18.4 KB

Unfortunately, because the VPS becomes completely unreachable after rebooting, we are unable to collect logs from the affected servers.

2

Hello. Do you have Nginx installed on your servers without Apache?

4

You should ask for a refund.

@VPS21 @dieselino Did you have any users with numeric-only usernames?

6

Then, why do you think the update messed up your server to the point that it wouldn’t start? We would need more details to know what’s happening.

7

Thank you for your reply.

Unfortunately, once the issue occurs and the VPS is rebooted, the server becomes completely inaccessible, so we have not been able to collect logs from the affected systems.

Our VPS provider informed us that the issue may be related to network/IP configuration settings being overwritten after the update. According to them, the VPS loses connectivity after the reboot, which is why the server no longer responds to SSH, ping, or any hosted services.

In several cases, the provider had to manually recover the VPS. We then created backups, but a simple OS reinstall did not resolve the issue. The VPS had to be recreated on the host node with the same IP address, followed by a fresh OS installation, HestiaCP installation, and backup restoration.

This has become a significant concern because it has affected multiple VPS instances. In some cases, we even experienced SSH connectivity problems before rebooting, while the websites themselves continued to function normally.

At the moment, we do not have a failed VPS available for testing, but if the issue occurs again, could you please let us know which logs or diagnostic commands we should collect before rebooting the server? We would be happy to gather the required information and provide it for further investigation.

Thank you.

8

Is your VPS using ifupdown, netplan, or systemd-networkd?
Is it using cloud-init?
Does it use a private IP, or is the public IP configured directly on the server?

What they did to recover it?