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How to enable the ionCube Loader module for PHP 8 shipped with Plesk?

The ionCube loader can be installed for PHP 8.1 since Plesk Obsidian 18.0.48.

To install it follow the steps below:

Log in to Plesk.
Go to Tools & Settings > General Settings > PHP Settings > PHP 8.1 > Manage PECL Packages and install ioncube_loader:

How to change PHP version for a domain in Plesk?

Question How to change PHP version for a domain in Plesk? Answer Log into Plesk. Go to Ples...
Unable to access Plesk GUI: Access denied for user 'admin'@'localhost' (using password: YES)

Plesk interface is inaccessible. One of the following error messages is shown in a web-browser or wh...
Unable to click the checkbox in the settings screen on Plesk: the Hand pointer cursor does not appear

Symptoms The hand pointer cursor does not appear on pointing it to the checkbox The Google Chrome b...
Plesk Repair tool fails to fix File System error: bytes-like object is required, not 'str'

File System check fails under Tools & Settings > Diagnose & Repair page ...
ASP.NET or other components installed not via Plesk are not detected at Server Components menu

Symptoms Manually enabled ASP.NET component is not displayed at Tools & Settings >...