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.
I would suggest enabling the Debug mode and checking the /var/log/plesk/panel.log for any records when you tick the checkbox of the option. That should shed more light on the issue.
@Daveo, do you have the 'Proxy mode' disabled for the domain name in question? Smart static files processing is applicable if you run Apache + Nginx with proxy mode on.
If you are still unable to set "Smart Static Files Processing" to on after enabling "Proxy mode"(you can disable it afterward), please follow the instructions provided by @Mikhail_S and let us know if you see any errors.