and i check your code of /usr/share/perl5/PVE/LXC/Setup.pm
from line 424
sub unified_cgroupv2_support {
my ($self) = @_;
$self->protected_call(sub {
$self->{plugin}->unified_cgroupv2_support();
});
}
you forget a check if its unmanaged here
it should be
sub...
