error - ionic serve

[wubuyun]

NgForOf.prototype.ngOnChanges@http://localhost:8100/build/vendor.js:54571:27 checkAndUpdateDirectiveInline@http://localhost:8100/build/vendor.js:11210:9 checkAndUpdateNodeInline@http://localhost:8100/build/vendor.js:12714:17 checkAndUpdateNode@http://localhost:8100/build/vendor.js:12653:16 debugCheckAndUpdateNode@http://localhost:8100/build/vendor.js:13517:38 debugCheckDirectivesFn@http://localhost:8100/build/vendor.js:13458:13 View_HomePage2/<@ng:///AppModule/HomePage.ngfactory.js:78:5 debugUpdateDirectives@http://localhost:8100/build/vendor.js:13443:12 checkAndUpdateView@http://localhost:8100/build/vendor.js:12620:5 callViewAction@http://localhost:8100/build/vendor.js:12988:21 execEmbeddedViewsAction@http://localhost:8100/build/vendor.js:12946:17 checkAndUpdateView@http://localhost:8100/build/vendor.js:12621:5 callViewAction@http://localhost:8100/build/vendor.js:12988:21 execComponentViewsAction@http://localhost:8100/build/vendor.js:12920:13 checkAndUpdateView@http://localhost:8100/build/vendor.js:12626:5 callViewAction@http://localhost:8100/build/vendor.js:12988:21 execEmbeddedViewsAction@http://localhost:8100/build/vendor.js:12946:17 checkAndUpdateView@http://localhost:8100/build/vendor.js:12621:5 callViewAction@http://localhost:8100/build/vendor.js:12988:21 execComponentViewsAction@http://localhost:8100/build/vendor.js:12920:13 checkAndUpdateView@http://localhost:8100/build/vendor.js:12626:5 callViewAction@http://localhost:8100/build/vendor.js:12988:21 execComponentViewsAction@http://localhost:8100/build/vendor.js:12920:13 checkAndUpdateView@http://localhost:8100/build/vendor.js:12626:5 callViewAction@http://localhost:8100/build/vendor.js:12988:21 execEmbeddedViewsAction@http://localhost:8100/build/vendor.js:12946:17 checkAndUpdateView@http://localhost:8100/build/vendor.js:12621:5 callViewAction@http://localhost:8100/build/vendor.js:12988:21 execComponentViewsAction@http://localhost:8100/build/vendor.js:12920:13 checkAndUpdateView@http://localhost:8100/build/vendor.js:12626:5 callWithDebugContext@http://localhost:8100/build/vendor.js:13843:39 debugCheckAndUpdateView@http://localhost:8100/build/vendor.js:13383:12 ViewRef.prototype.detectChanges@http://localhost:8100/build/vendor.js:10546:9 ApplicationRef.prototype.tick/<@http://localhost:8100/build/vendor.js:5169:58 ApplicationRef.prototype.tick@http://localhost:8100/build/vendor.js:5169:13 next/<@http://localhost:8100/build/vendor.js:5041:100 M</l</t.prototype.invoke@http://localhost:8100/build/polyfills.js:3:14354 onInvoke@http://localhost:8100/build/vendor.js:4247:24 M</l</t.prototype.invoke@http://localhost:8100/build/polyfills.js:3:14281 M</c</r.prototype.run@http://localhost:8100/build/polyfills.js:3:9504 NgZone.prototype.run@http://localhost:8100/build/vendor.js:4178:54 next@http://localhost:8100/build/vendor.js:5041:70 EventEmitter.prototype.subscribe/schedulerFn<@http://localhost:8100/build/vendor.js:3992:36 SafeSubscriber.prototype.__tryOrUnsub@http://localhost:8100/build/vendor.js:30486:13 SafeSubscriber.prototype.next@http://localhost:8100/build/vendor.js:30433:17 Subscriber.prototype._next@http://localhost:8100/build/vendor.js:30373:9 Subscriber.prototype.next@http://localhost:8100/build/vendor.js:30337:13 Subject.prototype.next@http://localhost:8100/build/vendor.js:52719:17 EventEmitter.prototype.emit@http://localhost:8100/build/vendor.js:3978:54 checkStable@http://localhost:8100/build/vendor.js:4212:13 onLeave@http://localhost:8100/build/vendor.js:4291:5 onInvoke@http://localhost:8100/build/vendor.js:4250:17 M</l</t.prototype.invoke@http://localhost:8100/build/polyfills.js:3:14281 M</c</r.prototype.run@http://localhost:8100/build/polyfills.js:3:9504 NgZone.prototype.run@http://localhost:8100/build/vendor.js:4178:54 NavControllerBase.prototype._viewsWillLifecycles@http://localhost:8100/build/vendor.js:61661:13 Animation.prototype._fireBeforeReadFunc@http://localhost:8100/build/vendor.js:28142:17 Animation.prototype._beforeAnimation@http://localhost:8100/build/vendor.js:28069:9 Animation.prototype._playDomInspect@http://localhost:8100/build/vendor.js:27736:9