• Debian 11 is approaching its end-of-life (vendor EOL date - August 31, 2026). Plesk Obsidian 18.0.80 will be the last release to support it.
    If you are running Plesk Obsidian on Debian 11, we recommend you upgrade those servers to Debian 12 using our dist-upgrade tool.
  • We plan to deprecate and remove the support for XML RPC protocol versions earlier than 1.6.9.1 in Plesk Obsidian 18.0.82. We strongly recommend that you update all existing integrations using earlier versions of the XML RPC protocol to comply with the version 1.6.9.1 specification.

10.2 Plesk backups: Version string portion was too short or too long.

We never heard about this issue on Plesk 10.x It was actual only for 9.x versions.
It should be investigated directly on your server, therefore I suggest you contact Parallels support team. If it is really bug but not some misconfiguration - you will be refunded for incident.
 
Ah, yes, after investigation I found that this error was coming from our only 9.5 server.

Many thanks.
 
Hi Igor,

I'm still getting errors but not that one anymore. I'm waiting to patch and reboot the machine to make sure that the problem has gone away.
 
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