05-11 13:57:58.482 31468-31468/org.jboss.aerogear.unifiedpush.helloworld E/AndroidRuntime: FATAL EXCEPTION: main

                                                                                           Process: org.jboss.aerogear.unifiedpush.helloworld, PID: 31468

                                                                                           java.lang.RuntimeException: Unable to start activity ComponentInfo{org.jboss.aerogear.unifiedpush.helloworld/org.jboss.aerogear.unifiedpush.helloworld.activities.MessagesActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void org.jboss.aerogear.android.unifiedpush.gcm.AeroGearGCMPushRegistrar.sendMetrics(org.jboss.aerogear.android.unifiedpush.metrics.UnifiedPushMetricsMessage, org.jboss.aerogear.android.core.Callback)' on a null object reference

                                                                                               at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)

                                                                                               at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)

                                                                                               at android.app.ActivityThread.-wrap11(ActivityThread.java)

                                                                                               at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)

                                                                                               at android.os.Handler.dispatchMessage(Handler.java:102)

                                                                                               at android.os.Looper.loop(Looper.java:148)

                                                                                               at android.app.ActivityThread.main(ActivityThread.java:5422)

                                                                                               at java.lang.reflect.Method.invoke(Native Method)

                                                                                               at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)

                                                                                               at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

                                                                                            Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void org.jboss.aerogear.android.unifiedpush.gcm.AeroGearGCMPushRegistrar.sendMetrics(org.jboss.aerogear.android.unifiedpush.metrics.UnifiedPushMetricsMessage, org.jboss.aerogear.android.core.Callback)' on a null object reference

                                                                                               at org.jboss.aerogear.unifiedpush.helloworld.HelloWorldApplication.sendMetric(HelloWorldApplication.java:54)

                                                                                               at org.jboss.aerogear.unifiedpush.helloworld.activities.MessagesActivity.onCreate(MessagesActivity.java:49)

                                                                                               at android.app.Activity.performCreate(Activity.java:6251)

                                                                                               at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)

                                                                                               at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)

                                                                                               at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 

                                                                                               at android.app.ActivityThread.-wrap11(ActivityThread.java) 

                                                                                               at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 

                                                                                               at android.os.Handler.dispatchMessage(Handler.java:102) 

                                                                                               at android.os.Looper.loop(Looper.java:148) 

                                                                                               at android.app.ActivityThread.main(ActivityThread.java:5422) 

                                                                                               at java.lang.reflect.Method.invoke(Native Method) 

                                                                                               at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 

                                                                                               at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 

05-11 14:03:51.803 3102-3102/org.jboss.aerogear.unifiedpush.helloworld E/org.jboss.aerogear.unifiedpush.helloworld.callback.MetricsCallback: The server returned the error code 500.

                                                                                                                                             org.jboss.aerogear.android.pipe.http.HttpException: The server returned the error code 500.

                                                                                                                                                 at org.jboss.aerogear.android.pipe.http.HttpRestProvider.getHeaderAndBody(HttpRestProvider.java:288)

                                                                                                                                                 at org.jboss.aerogear.android.pipe.http.HttpRestProvider.put(HttpRestProvider.java:181)

                                                                                                                                                 at org.jboss.aerogear.android.pipe.http.HttpRestProvider.put(HttpRestProvider.java:166)

                                                                                                                                                 at org.jboss.aerogear.android.unifiedpush.gcm.AeroGearGCMPushRegistrar$5.doInBackground(AeroGearGCMPushRegistrar.java:312)

                                                                                                                                                 at org.jboss.aerogear.android.unifiedpush.gcm.AeroGearGCMPushRegistrar$5.doInBackground(AeroGearGCMPushRegistrar.java:298)

                                                                                                                                                 at android.os.AsyncTask$2.call(AsyncTask.java:295)

                                                                                                                                                 at java.util.concurrent.FutureTask.run(FutureTask.java:237)

                                                                                                                                                 at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)

                                                                                                                                                 at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)

                                                                                                                                                 at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)

                                                                                                                                                 at java.lang.Thread.run(Thread.java:818)