As this isn't a NPE (or a type error, which I think is the JS equivalent), the we're missing a step here. You are seeing an UmbrellaException thrown, which means not that the handlermanager or event wiring broke, but that your own handler threw the exception (i.e. the 'TypeError' described in the wrapper).
That trace is kept in the umbrella exception, and will likely be necessary to figure out what the real issue is. Also, the stack below the anon function won't be useful, that's very likely the wiring that calls into the widget event handling from the dom. On Thu, Jul 9, 2015 at 10:08 PM Ali Akhtar <[email protected]> wrote: > In 2.8.0-SNAPSHOT, when the ValueChangeEvent is triggered for a dropdown, > I'm encountering the following stack trace: > > Uncaught com.google.gwt.event.shared.UmbrellaException: Exception caught: > Exception caught: (TypeError) : Cannot read property > 'java_util_LinkedList_size' of undefined > > > com_google_gwt_event_shared_HandlerManager_$fireEvent__Lcom_google_gwt_event_shared_HandlerManager_2Lcom_google_gwt_event_shared_GwtEvent_2V > > > com_google_gwt_user_client_ui_Widget_$onBrowserEvent__Lcom_google_gwt_user_client_ui_Widget_2Lcom_google_gwt_user_client_Event_2V > > _.onBrowserEvent__Lcom_google_gwt_user_client_Event_2V > > _.onBrowserEvent__Lcom_google_gwt_user_client_Event_2V > > > com_google_gwt_user_client_impl_DOMImplStandard_dispatchEvent__Lcom_google_gwt_user_client_Event_2V > > (anonymous function) > > > This only happens in production, in SDM it works without any issues. > > I'm not sure which line specifically causes this, because the stacktrace > stops at the anonymous function. But, it seems to be around where I'm > creating an autobean object. The first line of my event handler which shows > a loading message, seems to get executed fine. > > Would appreciate a speedy resolution to this, as this is in production. > Thanks. > > -- > You received this message because you are subscribed to the Google Groups > "GWT Contributors" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/google-web-toolkit-contributors/f4b201e1-5a00-4681-a4ac-3505d7bbc291%40googlegroups.com > <https://groups.google.com/d/msgid/google-web-toolkit-contributors/f4b201e1-5a00-4681-a4ac-3505d7bbc291%40googlegroups.com?utm_medium=email&utm_source=footer> > . > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "GWT Contributors" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/google-web-toolkit-contributors/CADcXZMxS%3D7pNHH%3DqHBsY3grOA3jUdq6P%2BPn2asgLGJmGJ-87Bg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
