Hi there,
I have a Plesk server that doesn't offer the upgrade for Plesk Obsidian.
This is currently what's on the server:
OS CentOS Linux 7.2.1511 (Core)
Product Plesk Onyx
Version 17.8.11 Update #66, last updated on Aug 29, 2019 03:42 AM.
Help is much appreciated, thanks in...