Getting exception: Not handled: OnAdd

I am trying to add an object to an observable list:


cardObject: {“paymentMethodId”:“8a10af44cea34ac1966c28be88b7d007”,“issuer”:“Visa”,“issuerId”:3,“maskedPan”:“492500******0004”,“description”:“My Visa”}

Getting the exception:

ERROR: Not handled: OnAdd
    System.Exception occured.
      at Fuse.Reactive.DataBinding1[System.Boolean].Fuse.Reactive.IObserver.OnAdd (System.Object addedValue) [0x00000] in <filename unknown>:0 
      at Fuse.Reactive.Dispatcher+ArgDispatch1[System.Object].Run () [0x00000] in <filename unknown>:0 
      at Fuse.Reactive.Dispatcher+UIThreadDispatcher.Run () [0x00000] in <filename unknown>:0 
      at Fuse.UpdateListener.Invoke () [0x00000] in <filename unknown>:0 
      at Fuse.UpdateManager.Update (Fuse.Stage stage) [0x00000] in <filename unknown>:0


<Each Items="{UserVM.Cards}">

                    <DockPanel Margin="10,10,10,10" Background="1,1,1,0.3">
                        <Image Width="40" Dock="Left" Margin="0,0,20,0" Source="{DataToResource issuer}" /> 
                            <Text Value="{maskedPan}" />
                            <Text Value="{description}" />
                        <Image ux:Name="deleteCardButton" File="../../../Assets/delete.png" Clicked="{UserVM_RemoveCard}" Dock="Right" Height="30" Width="30" />
                    <Rectangle Height="1" Dock="Bottom">
                        <SolidColor Color="#cac2b9" />
                        <Move RelativeTo="Size" X="-1" Duration="0.4" Easing="CircularOut" />


If I click ignore the new card will be added in the list and the UI is updated.

Can you post your Js code please

I suspect this is already resolved as the thread is almost 2.5 months old (and I know Daniel has been progressing on his projects since then). :slight_smile: