Weld Probe does not handle flat deployment correctly

when I hit the /weld-probe url, it shows blank page. with the developer tools: I saw there are some JavaScript error:

Error while processing route: beanArchives Cannot read property 'forEach' of undefined TypeError: Cannot read property 'forEach' of undefined
at http://localhost:8080/horizon/weld-probe/client/probe.js:331:107
at Array.forEach (native)
at findLinksBdas (http://localhost:8080/horizon/weld-probe/client/probe.js:331:67)
at buildBdaGraphData (http://localhost:8080/horizon/weld-probe/client/probe.js:329:147)
at Probe.BeanArchivesRoute.Ember.Route.extend.model (http://localhost:8080/horizon/weld-probe/client/probe.js:246:1)
at _ (http://localhost:8080/horizon/weld-probe/client/probe.js:221:9511)
at r [as model] (http://localhost:8080/horizon/weld-probe/client/probe.js:221:8038)
at K.extend.deserialize (http://localhost:8080/horizon/weld-probe/client/probe.js:222:13540)
at p (http://localhost:8080/horizon/weld-probe/client/probe.js:227:18829)
at Object.n.runSharedModelHook (http://localhost:8080/horizon/weld-probe/client/probe.js:226:30774)