Error adding a new card to VM100 vmbr1

[macaruchi]

I added a new NIC card to my Proxmox server but when I try to add this new card to VM I get an error

Parameter verification failed. (400)

net1: hotplug problem - VM 100 qmp command 'netdev_add' failed - network script /var/lib/qemu-server/pve-bridge-hotplug failed with status 512

I created the vmbr1 before to add this to VM machine

This server has 3 NIC cards and I am trying to use the another 2

Any cluees?

 

[Kingneutron]

If you are trying this with the VM powered on, try shutting it down first

Not that that explains/fixes everything, but it is a hotplug error