[PCE_WEBUI]Exception occurred in PceWebTopovMessageHandler

Exception occurred in PceWebTopovMessageHandler

Topology
8 router topology

Steps to reproduce
1) Create eight tunnels
2) shut and unshut the primary interface

Observation
onos>
onos> exception-display
java.lang.IllegalStateException: Connection point not associated with an infrastructure device
at org.onosproject.net.ConnectPoint.deviceId(ConnectPoint.java:67)[74:org.onosproject.onos-api:1.6.1.SNAPSHOT]
at org.onosproject.pceweb.PceWebTopovMessageHandler.highlightsForTunnel(PceWebTopovMessageHandler.java:755)[191:org.onosproject.onos-app-pceweb:1.6.1.SNAPSHOT]
at org.onosproject.pceweb.PceWebTopovMessageHandler.access$1600(PceWebTopovMessageHandler.java:71)[191:org.onosproject.onos-app-pceweb:1.6.1.SNAPSHOT]
at org.onosproject.pceweb.PceWebTopovMessageHandler$InnerPceWebTunnelListener.event(PceWebTopovMessageHandler.java:685)[191:org.onosproject.onos-app-pceweb:1.6.1.SNAPSHOT]
at org.onosproject.pceweb.PceWebTopovMessageHandler$InnerPceWebTunnelListener.event(PceWebTopovMessageHandler.java:680)[191:org.onosproject.onos-app-pceweb:1.6.1.SNAPSHOT]
at org.onosproject.event.ListenerRegistry.process(ListenerRegistry.java:66)[74:org.onosproject.onos-api:1.6.1.SNAPSHOT]
at org.onosproject.event.impl.CoreEventDispatcher$DispatchLoop.process(CoreEventDispatcher.java:145)[137:org.onosproject.onos-core-net:1.6.1.SNAPSHOT]
at org.onosproject.event.impl.CoreEventDispatcher$DispatchLoop.run(CoreEventDispatcher.java:128)[137:org.onosproject.onos-core-net:1.6.1.SNAPSHOT]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)[:1.8.0_91]
at java.util.concurrent.FutureTask.run(FutureTask.java:266)[:1.8.0_91]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[:1.8.0_91]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[:1.8.0_91]
at java.lang.Thread.run(Thread.java:745)[:1.8.0_91]

onos>