Follow along with the video below to see how to install our site as a web app on your home screen.
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The APS Catalog has been deprecated and removed from all Plesk Obsidian versions. Applications already installed from the APS Catalog will continue working. However, Plesk will no longer provide support for APS applications.
Please be aware: with the Plesk Obsidian 18.0.78 release, the support for the ngx_pagespeed.so module will be deprecated and removed from the sw-nginx package.
As far as I see in your screenshot, you have Debian 7.11. Yes, Debian 7 is listed in supported OSes here Software Requirements for Plesk
But actually, it is not supported. This is a bug in Software Requirements and I will forward the corresponding request to the responsible person for fixing this bug.
So, this is the reason for this initial issue.
Hi All, I found the problem. new Plesk version don't support Debian 7. So i need to upgrade my OS to Debian 8 or 9 first.
"* - Debian 7 is supported in Plesk Onyx 17.0 and Plesk Onyx 17.5, but is not supported in Plesk Onyx 17.8 and later."