Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
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.
If somebody faces the same issue. Root cause was a corrupt license file for Plesk 12. In addition you need to verify if you have the Postfix package installed, otherwise Plesk cannot pull a license update.
Hope this might help you.
thanks for your hint but disk has more than 50% free space. I'm getting frustrated now, updated PHP, run autoinstaller with patches and run bootstrap repair. No improvement and no hint in log files. Bad mistake to move to Plesk version 12.0.18 !