Cannot create network for docker compose

Hi, I am having problems in getting docker compose (e.g. "Immich" but also other compose files) up and running. The problem only occurs when the docker file intends to define a network. An examplary error message is:

✘ Network immich_default Error 0.4s

failed to create network immich_default: Error response from daemon: Failed to program NAT chain: COMMAND_FAILED: 'python-nftables' failed: internal:0:0-0: Error: No such file or directory

When I stop the firewall via "systemctl stop firewalld" the docker file starts, however I obviously do not get connection due to the firewall being disabled.

Any idea how to solve this?

Ah, yes. I am running OMV 6.9.15-2 (Shaitan) on debian 11.

Hi, yes I created from "example". But this is not the core of the problem. The problem occurs also when I create an arbitray network under services->Compose->Network. So the problem isnot linked to "Immich" alone.

Hi, firewalld is running inside the OMV installation. I guess this is the standard set-up?

My file /etc/firewalld/firewalld.conf states "nftables":

# FirewallBackend

# Selects the firewall backend implementation.

# Choices are:

# - nftables (default)

# - iptables (iptables, ip6tables, ebtables and ipset)

FirewallBackend=nftables

is that causing the problem?

Hi. My problem is solved for the time being. Indeed I had (for whatever reason) firewalld installed. After I removed, the errors did not occur. Thanks for your support!