Why can't I start the VM?

Question

linux

I start the virtual machine, I get this error. What can be associated with?
no physical interface on bridge 'vmbr1'
kvm: network script /var/lib/qemu-server/pve-bridge failed with status 6400
TASK ERROR: start failed: QEMU exited with code 1

Answer 1

The physical interface that was added to it flew out of the vmbr1 bridge. I have such a hat - generally a common thing when the network disappears. The interface crashes and that's it.