• 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.

Issue Some png images not loading after Google PageSpeed Insights Plesk Extension

Please do not mix pagespeed module for webserver (apache, nginx) and Google PageSpeed Insights Plesk Extension which is the tool for analyzing the delivered content of your website and makes suggestions to improve it. So, this extension does not affect the functionality of your site.
If you have installed mod_pagespeed for your webserver - then this is another conversation. But this can not be done in Plesk by default, because it is not officially supported at this time. If you enabled this module with the well-known solution from @UFHH01 , then you need to ask in the corresponding thread.
 
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