Update fails / php issue

Hi all,

I tried to update my Nextcloud on my Synology.

When running “sudo -u http php74 occ maintenance:mode --off” I get the error:
An unhandled exception has been thrown:
OCP\HintException: [0]: Memcache \OC\Memcache\APCu not available for local cache (Is the matching PHP module installed and enabled?)

What I found while researching is to set apc.enable_cli to 1 which I have done in the settings of the Webstation App (for some reason I cannot find the /etc folder and the php.ini - but I guess the effect should be the same). However, that doesn’t help. The error keeps appearing.

What I am doing wrong?