Hello again,
The problem has returned. I think everything is configured correctly. This time when i execute command:
sudo -u www-data crontab -l
i get:
OC\HintException: [0]: Memcache \OC\Memcache\APCu not available for local cache (Is the matching PHP module installed and enabled?)
Nextcloud version 22.2.0
Please give me a hint.
It seems the problem solved: OCC won't run with memcache/apcu - #8 by feligato