There is no method "null". Code generation for smoke packet seems incomplete

I am using multiple core-ajax-dart elements in a webpage. It looks like custom events firing is broken. When using a declarative on-core-response="{{ajaxNewProjectResponse}}"

element, it seems to want to fire a custom event, but there is a smoke pack in there that gives:

Missing method "null" in competences-service. Code generation for the smoke package seems incomplete.

      

        
        
        
      

    

If I make it necessary, through ajaxNewProject.onCoreResponse.listen(ajaxNewProjectResponse);

, it works as expected (the event fires and my event method is called).

It worked. I suspect it might break when I update versions of polymers or core_elements, or when I started using more and more core-ajax-dart elements.

What I understand from the smoke packet is that it can be associated with a polymer transformer. The error leads me to believe that some of the code was not properly generated, and therefore may indicate a structure error rather than an error in my code. I could find a relatively small message about this error message, only https://groups.google.com/a/dartlang.org/forum/#!topic/web/INNHAZhLy1A , but I am not hiding expressions in lines in code. Am I on the right track here?

Mistake:

Exception: Uncaught Error: Missing method "null" in competences-service. Code generation for the smoke package seems incomplete.
Stack Trace:
#0      GeneratedObjectAccessorService.invoke (package:smoke/static.dart:127:7)
#1      invoke (package:smoke/smoke.dart:43:41)
#2      HtmlElement&Polymer.dispatchMethod (package:polymer/src/instance.dart:1138:19)
#3      BindingDelegate&PolymerEventBindings.getEventHandler.<anonymous closure> (package:polymer/src/events.dart:82:32)
#4      _RootZone.runUnaryGuarded (dart:async/zone.dart:1089)
#5      _RootZone.bindUnaryCallback.<anonymous closure> (dart:async/zone.dart:1118)
#6      BindingDelegate&PolymerEventBindings.prepareEventBinding.<anonymous closure>.<anonymous closure> (package:polymer/src/events.dart:101:67)
#7      BlinkEventTarget.dispatchEvent_Callback_Event (dart:_blink:42)
#8      EventTarget.dispatchEvent (dart:html:13924)
#9      HtmlElement&Polymer.fire (package:polymer/src/instance.dart:1201:23)
#10     CoreAjax.processResponse (package:core_elements/core_ajax_dart.dart:208:14)
#11     receive (package:core_elements/core_ajax_dart.dart:190:27)
#12     CoreXhr._makeReadyStateHandler.<anonymous closure> (package:core_elements/core_xhr_dart.dart:107:39)

      

        
        
        
      

    

My Code: Full Code https://github.com/pjjjv/Akepot/tree/0b093b2b9671f4ce0351750d9ce3609dfb4e82f5 . The core-ajax-dart elements are in lib / competences_service.html and to display the error I left an object with the id ajaxNewProject with a declarative event handler.

Excerpt: Html:

<core-ajax-dart id="ajaxNewProject"
      url="https://1-dot-akepot-competence-matrix.appspot.com/_ah/api/akepot/v1/project/"
       on-core-response="{{ajaxNewProjectResponse}}" on-core-error="{{ajaxError}}"
      handleAs="json" method="POST">
    </core-ajax-dart>

      

        
        
        
      

    

Dart:

  void newProject(Project project){
    if(!signedin){
      throw new Exception("Not signed in.");
    }
    ajaxNewProject.url = "https://1-dot-akepot-competence-matrix.appspot.com/_ah/api/akepot/v1/project/$hash";
    ajaxNewProject.body = JSON.encode(project.toJson());
    ajaxNewProject.go();
  }

  @reflectable
  void ajaxNewProjectResponse(CustomEvent event, Map detail, CoreAjax node) {
    ...
  }

      

        
        
        
      

    

If you run the application, log in to the top left, click New Project and click New Project again. Then check your console.