Can't start container

Each time I tried to start a container I got this error from lxd

Failed closing listener connection           
 err="close unix /var/lib/lxd/unix.socket->@: use of closed network connection" 

Do you have any clue about this ? I can’t find anything about it

Sounds like lxd is crashing, can you see if you can get a stack trace:

Debugging a stack trace:

systemctl stop snap.lxd.daemon.service snap.lxd.daemon.unix.socket

sudo lxd --debug --group lxd

To start backup normal:

systemctl start snap.lxd.daemon.unix.socket

lxc info

What lxd version also?

Found why by testing it via lxc directly. Caused by the fact I forgot to mount cgroups for systemd (I use openrc system). While those errors are still popping, container is starting

Did you get a stack trace? Would be interesting to see what caused the drop in connection.