Use of uninitialized value in concatenation (.) or string at /opt/vyatta/sbin/vyatta-qos.pl line 247

So I recently moved my WAN to a VLAN under eth0 (eth0.100).  If I modify my traffic-policy (i.e. change the default bandwidth) I get the following error.

admin@wd-ubnt-em5p# commit
[ traffic-policy shaper UpStream ]
Use of uninitialized value in concatenation (.) or string at /opt/vyatta/sbin/vyatta-qos.pl line 247.

Looking at that line, it's:
my $level = $intf->path() . ' traffic-policy';

Seems to still work since the commit actually commits, but I'm not 100% sure my QOS is even working now.  I tried calling my phone system earlier and there was a lot of upstream loss.  It cleared up on it's own, but I found it strange.  

Here's my traffic-policy config

 shaper UpStream {
     bandwidth 20mbit
     class 10 {
         bandwidth 30%
         burst 15k
         ceiling 100%
         description Elastix
         match addr {
             ip {
                 source {
                     address 192.168.192.5/32
                 }
             }
         }
         priority 7
         queue-type fair-queue
     }
     default {
         bandwidth 60%
         burst 15k
         ceiling 100%
         priority 2
         queue-type fair-queue
     }
     description "UpStream QoS policy"
 }

Here's where I apply it to the VLAN

 ethernet eth0 {
     description "Trunk"
     duplex auto
     poe {
         output off
     }
     speed auto
     vif 100 {
         address dhcp
         description "TWC WAN VLAN"
         dhcpv6-pd {
             pd 0 {
                 interface switch0 {
                 }
                 prefix-length 64
             }
             rapid-commit enable
         }
         firewall {
             in {
                 ipv6-name WANv6_IN
                 name WAN_IN
             }
             local {
                 ipv6-name WANv6_LOCAL
                 name WAN_LOCAL
             }
         }
         traffic-policy {
             out UpStream
         }
     }
     vif 101 {
         address 192.168.194.1/24
         description "LAN VLAN"
         mtu 1500
     }
 }

Any ideas would be great.