fence_virtualbox failed to reboot

I’m learning how to fence pacemaker using fence_virtualbox from [\[ClusterLabs\] Fence agent for VirtualBox][1] , but I can’t get it working. When I try to run stonith_admin –-reboot it failed. Currently, my setup is: Node ID: VM name: orcllinux1 OL7 orcllinux2 OL7_2 I set it up using: pcs stonith create fence_vbox fence_virtualbox pcmk_host_map=”orcllinux1:OL7,orcllinux2:OL7_2” pcmk_host_list=”orcllinux1,orcllinux2” pcmk_host_check=static_list ipaddr=”192.168.57.1” login=”root” But stonith_admin –-reboot resulting in this error: I tried to use the fence_virtualbox manually using: fence_virtualbox -s 192.168.57.1 -p OL7 -o=reboot and it succeeded. Is my stonith create syntax wrong? What's the right syntax if it's wrong?