With the minidlna daemon stopped sudo systemctl stop minidlna run sudo -u minidlna mindlnad -R to rebuild the media cache, observe in the console. It will not stop.

If sudo systemctl status autofs shows nothing, The sudo systemctl status minidlna might show an error as: /lib/systemd/system/minidlna.service:4: Failed to add dependency on autofs, ignoring: Invalid argument

The /lib/systemd/system/minidlna.service might ask for autofs, but the setup does not need autofs. Therefore delete autofs in the following line in /lib/systemd/system/minidlna.service

After=local-fs.target remote-fs.target autofs

sudo systemctl daemon-reload and sudo systemctl start minidlna

sudo cat /var/log/minidlna/minidlna.log might show errors as monitor.c:222: warn: WARNING: Inotify max_user_watches [29927] is low or close to the number of used watches [393] and I do not have permission to increase this limit. Please do so manually by writing a higher value into /proc/sys/fs/inotify/max_user_watches.

I notify watches are used to detect if files and directories get changed. There is a limit for those watches. It can be observed with: sudo cat /proc/sys/fs/inotify/max_user_watches

The number can be temporary increased by sudo sysctl fs.inotify.max_user_watches=<n>

for permanently edit /etc/sysctl.conf

fs.inotify.max_user_watches=<n>

and sudo sysctl -p

It is also possible to not use inotify watches. Add

inotify = no

in /etc/minidlna.conf

Since inotify watches use a lot of resources, disabling inotify watches might be considered for big media data on a small devices with not much data that changes. In this case the the minidlnad must be stopped from time to time and restarted with minidlnad -r to force a rescan of the data.

sudo cat /var/log/minidlna/minidlna.log might show errors as minissdp.c:324: error: sendto(udp_notify=10, 192.168.10.1): Required key not available

In this case the IP address comes from an additional wireguard interface. Setting in /etc/minidlna.conf

network_interface=eth0

removes those errors