com.firebase.client.FirebaseException: Failed to bounce to type

[Calvincac]

It seems like your app has an issue. When i open it on Emulator it crashes and shows up the stacktrace below:

E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.gdgnd.firebasecodelab, PID: 2548
com.firebase.client.FirebaseException: Failed to bounce to type
at com.firebase.client.DataSnapshot.getValue(DataSnapshot.java:183)
at com.gdgnd.firebasecodelab.FirebaseListAdapter$1.onChildAdded(FirebaseListAdapter.java:63)
at com.firebase.client.core.ChildEventRegistration.fireEvent(ChildEventRegistration.java:48)
at com.firebase.client.core.view.DataEvent.fire(DataEvent.java:45)
at com.firebase.client.core.view.EventRaiser$1.run(EventRaiser.java:38)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)
Caused by: com.fasterxml.jackson.databind.exc.UnrecognizedPropertyException: Unrecognized field "emoji" (class com.gdgnd.firebasecodelab.Message), not marked as ignorable (2 known properties: , "message", "name"])
at [Source: java.io.StringReader@b1034b; line: 1, column: 36] (through reference chain: com.gdgnd.firebasecodelab.Message["emoji"])
at com.fasterxml.jackson.databind.DeserializationContext.reportUnknownProperty(DeserializationContext.java:555)
at com.fasterxml.jackson.databind.deser.std.StdDeserializer.handleUnknownProperty(StdDeserializer.java:708)
at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.handleUnknownProperty(BeanDeserializerBase.java:1160)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:315)
at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:121)
at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:2888)
at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:2034)
at com.firebase.client.DataSnapshot.getValue(DataSnapshot.java:181)
at com.gdgnd.firebasecodelab.FirebaseListAdapter$1.onChildAdded(FirebaseListAdapter.java:63) 
at com.firebase.client.core.ChildEventRegistration.fireEvent(ChildEventRegistration.java:48) 
at com.firebase.client.core.view.DataEvent.fire(DataEvent.java:45) 
at com.firebase.client.core.view.EventRaiser$1.run(EventRaiser.java:38) 
at android.os.Handler.handleCallback(Handler.java:751) 
at android.os.Handler.dispatchMessage(Handler.java:95) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:6077) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:865) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:755)