Initially reported in slack channel.
cpo@LR1:~$ show dhcp server leases Traceback (most recent call last): File "/usr/libexec/vyos/op_mode/show_dhcp.py", line 26, in <module> from isc_dhcp_leases import Lease, IscDhcpLeases ImportError: No module named 'isc_dhcp_leases'