[libvirt-users] error: internal error lxc state driver is not active

hi: I want to use libvirt with LXC, but when I use virsh -c lxc:/// to connect to lxc, it just print these errors: error: internal error lxc state driver is not active error: failed to connect to the hypervisor I searched these error message , but it seems that there is no helpful information . Could you help me solve this problem? Thanks :)