What distribution are you running?
EDIT: I’m asking because based on your other post: Can't get unprivileged containers to auto start, it doesn’t seem like you’re running cgroupsv2/unified
Specifically this line in your output popped out to me
lxc-autostart 20250618053446.357 INFO cgfsng - ../lxc-6.0.3/src/lxc/cgroups/cgfsng.c:unpriv_systemd_create_scope:1506 - Not in unified layout, not using a systemd unit