Unable to load dynamic library '/opt/alt/php56/usr/lib64/php/modules/memcached

Issue

The Memcached module not loading even though it's properly activated from cPanel.

This is the error :

Message: PHP Startup: Unable to load dynamic library '/opt/alt/php56/usr/lib64/php/modules/memcached.so' - /opt/alt/php56/usr/lib64/php/modules/memcached.so: undefined symbol: igbinary_serialize

The issue is happening with this package:

# yum info alt-php56-pecl-ext-1-100.el8.x86_64
This system is receiving updates from CloudLinux Network server.
Last metadata expiration check: 0:13:35 ago on Thu 12 Jan 2023 01:09:59 PM CET.
Installed Packages
Name         : alt-php56-pecl-ext
Version      : 1
Release      : 100.el8
Architecture : x86_64
Size         : 20 M
Source       : alt-php56-pecl-ext-1-100.el8.src.rpm
Repository   : @System
From repo    : cloudlinux-x86_64-server-8
Summary      : PECL is a repository for PHP Extensions, providing a directory of all known extensions and hosting facilities for downloading and development of PHP
             : extensions.
URL          : http://pecl.php.net/
License      : GPL, MIT, PHP
Description  : This package collect some PECL extentions

and if it's downgraded to 1-99, the error goes away.

Environment

• cPanel
• alt-PHP

Solution

Our developers confirmed the new bug and registered it in our bug-tracking system with the id ALTPHP-1389. The issue will be fixed soon in one of the upcoming releases.

At the moment, the following workaround could be used:

1. Downgrade the package: 
   # yum downgrade alt-php56-pecl-ext

2. Temporarily disable the package processing by adding it to the yum exclude  list in /etc/yum.conf

/etc/yum.conf
exclude=some_already_existing_packages alt-php56-pecl-ext

Note, do not forget to remove it from the yum exclusion list once the bug will be fixed

The bug ID ALTPHP-1389  will be mentioned in our changelog once the fix is released, so you can use this ID to search for updates: https://changelog.cloudlinux.com/ 
Please stay tuned on our Changelog website to get the latest news about software updates.

Cause

Bug ALTPHP-1389.