Description of problem:
switching my Nextcloud server to maintenance mode by sudo -u apache php /var/www/nextcloud/occ maintenance:mode --on

I get the error: "Memcache \\OC\\Memcache\\APCu not available for local cache”

Version-Release number of selected component (if applicable):
php-apcu-5.1.19-1.mga8 and it might have started to happen after PHP 8.0.8 update (I am not certain though).

I have an nginx server with php-fpm:
* nginx version: nginx/1.18.0
* Zend Engine v4.0.8, Copyright (c) Zend Technologies
    with Zend OPcache v8.0.8, Copyright (c), by Zend Technologies

I have the latest stable Nextcloud version 21.0.3

How reproducible: always on my server until I fixed it.


Steps to Reproduce:
1. Install Nextcloud with Nginx server using wiki: https://wiki.mageia.org/en/Nextcloud_server_installation_with_NGINX
2. Run sudo -u apache php /var/www/nextcloud/occ maintenance:mode --on (actually, any occ command will lead to the save error)

FIX:
I fixed it using the recommended solution on the nextcloud forum: https://help.nextcloud.com/t/nc13-memcache-oc-memcache-apcu-not-available-for-local-cache/31027

Meaning I had to edit /etc/php.d/99_apcu.ini and add the following line:
apc.enable_cli=1


I am sure I was not getting this error when I installed the first time Nextcloud on Mageia 8 and php 8.0.2 (it is when I wrote the wiki in reference).


Is it connected to PHP updates or to Nextcloud updates? 
I can't say myself.

Do you have an idea? Should our /etc/php.d/99_apcu.ini be modified?

Let me know how I can help.

Kind regards.