I build ionic2 app and use crosswalk plugin.Get error after running

01-27 09:02:26.772 17942-17942/io.ionic.starter I/chromium: [INFO:CONSOLE(33734)] "EXCEPTION: Error during instantiation of ConferenceApp!.", source: file:///android_asset/www/build/js/app.bundle.js (33734)
01-27 09:02:26.773 17942-17942/io.ionic.starter I/chromium: [INFO:CONSOLE(33734)] "ORIGINAL EXCEPTION: TypeError: Cannot read property 'user:login' of undefined", source: file:///android_asset/www/build/js/app.bundle.js (33734)
01-27 09:02:26.773 17942-17942/io.ionic.starter I/chromium: [INFO:CONSOLE(33734)] "ORIGINAL STACKTRACE:", source: file:///android_asset/www/build/js/app.bundle.js (33734)
01-27 09:02:26.773 17942-17942/io.ionic.starter I/chromium: [INFO:CONSOLE(33734)] "TypeError: Cannot read property 'user:login' of undefined
                                                        at Events.subscribe (file:///android_asset/www/build/js/app.bundle.js:41672:29)
                                                        at ConferenceApp.listenToLoginEvents (file:///android_asset/www/build/js/app.bundle.js:3265:22)
                                                        at new ConferenceApp (file:///android_asset/www/build/js/app.bundle.js:3246:15)
                                                        at file:///android_asset/www/build/js/app.bundle.js:8131:60
                                                        at Injector._instantiate (file:///android_asset/www/build/js/app.bundle.js:6696:28)
                                                        at Injector._instantiateProvider (file:///android_asset/www/build/js/app.bundle.js:6644:26)
                                                        at Injector._new (file:///android_asset/www/build/js/app.bundle.js:6633:22)
                                                        at InjectorInlineStrategy.instantiateProvider (file:///android_asset/www/build/js/app.bundle.js:6130:31)
                                                        at ElementInjectorInlineStrategy.hydrate (file:///android_asset/www/build/js/app.bundle.js:19812:25)
                                                        at ElementInjector.hydrate (file:///android_asset/www/build/js/app.bundle.js:19473:25)", source: file:///android_asset/www/build/js/app.bundle.js (33734)

I used for ionic-conference-app-master project.Not using crosswalk plugin is possible to run.