RedisException: No such file or directory in /var/www/nextcloud/lib/private/RedisFactory.php:92

Unfortuantely I don’t know what to do to fix it for you :pray: but I did find some relevant articles that perhaps have the answer for you?

Does the notify_push test work for you in CLI?

ncc notify_push:self-test

If you restart the notify_push service and/or start it manually does it start up then?

systemctl restart notify_push

systemctl start notify_push.service
service notify_push restart

NCP Issue on GitHub

NC Issue on GitHub

NC Forum topic - Notify Push Service does not start automatically

Also, what does the journalctl -xe say?