Resolved Cannot access the Plesk web panel after upgrading to Debian 10.

[Java2107]

Hi,

Today we upgraded our server to Debian 10. The upgrade went fairly well and there were some small issues which we managed to resolve, but we cannot access the Plesk web panel.

We have tried running Plesk repair utility on a command line to no avail. The following is shown when I try to access the panel:

Warning: Unknown: failed to open stream: No such file or directory in Unknown on line 0

Fatal error: Unknown: Failed opening required 'auth.php' (include_path='.:') in Unknown on line

Additionally I have attached a screenshot of what is shown.

Thanks.

 

[Martin Dias]

If you have a snapshot before the upgrade then restore it or if you have backups restore them on a fresh server.

How to perform dist-upgrade procedure on Linux server with Plesk?

Applicable to: Plesk Obsidian for Linux Plesk for Linux How to perform a dist-upgrade? Warning: The dist-upgrade procedure is complex, hence you may want to consider migration instead as can be ...

support.plesk.com

Warning:

Currently, Plesk does not support dist-upgrade from Ubuntu 16.04 to Ubuntu 18.04 or Debian 9 to Debian 10 yet.

 

[Java2107]

We managed to fix the issue by renaming /etc/apt/sources.list.d to /etc/apt/sources.list.d.backup and running the Plesk installer, and everything seems to be in full working order.

 

[Martin Dias]

I would in this case recommend you to set up a new server with Debian 10 install Plesk on it and migrate. To avoid any other issues that maybe still lingering due the Dist Upgrade

 

[Java2107]

I've tested everything and it appears to be working fine. I'd reinstall everything, but from my knowledge there is no easy way to back the entirety of Plesk's configuration to a file and restore it on another server.