我的Angular Dart（1.0 / 1.1）网络项目抛出了以下异常，但因为它是从框架中抛出而不是从我自己的代码中抛出，我不知道是什么引起它。
The null object does not have a getter '_nextEvalWatch'.
NoSuchMethodError: method not found: '_nextEvalWatch'
Receiver: null
Arguments: []
STACKTRACE:
#0 Object.noSuchMethod (dart:core-patch/object_patch.dart:45)
#1 WatchGroup.newGroup (package:angular/change_detection/watch_group.dart:279:34)
#2 Scope.createChild (package:angular/core/scope.dart:361:51)
#3 Scope.createProtoChild (package:angular/core/scope.dart:376:23)
#4 _updateContent (package:angular/directive/ng_include.dart:46:41)
#5 _rootRunUnary (dart:async/zone.dart:902)
#6 _ZoneDelegate.runUnary (dart:async/zone.dart:508)
#7 _onRunUnary.<anonymous closure> (package:angular/core/zone.dart:122:63)
#8 VmTurnZone._onRunBase (package:angular/core/zone.dart:104:16)
#9 _onRunUnary (package:angular/core/zone.dart:122:17)
#10 _CustomZone.runUnary (dart:async/zone.dart:804)
#11 _Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:484)
#12 _Future._propagateToListeners (dart:async/future_impl.dart:567)
#13 _Future._propagateToListeners (dart:async/future_impl.dart:448)
#14 _Future._completeWithValue (dart:async/future_impl.dart:358)
#15 _Future._asyncComplete.<anonymous closure> (dart:async/future_impl.dart:412)
#16 _rootRun (dart:async/zone.dart:891)
#17 _ZoneDelegate.run (dart:async/zone.dart:501)
#18 _onScheduleMicrotask.<anonymous closure> (package:angular/core/zone.dart:127:45)
#19 RootScope._runAsyncFns (package:angular/core/scope.dart:924:25)
#20 RootScope.digest (package:angular/core/scope.dart:813:38)
#21 Scope.apply (package:angular/core/scope.dart:316:24)
#22 RootScope.RootScope.<anonymous closure> (package:angular/core/scope.dart:768:12)
#23 _rootRun (dart:async/zone.dart:895)
#24 _ZoneDelegate.run (dart:async/zone.dart:501)
#25 VmTurnZone._finishTurn (package:angular/core/zone.dart:168:21)
#26 VmTurnZone._onRunBase (package:angular/core/zone.dart:111:43)
#27 _onRunUnary (package:angular/core/zone.dart:122:17)
#28 _CustomZone.runUnary (dart:async/zone.dart:804)
#29 _CustomZone.runUnaryGuarded (dart:async/zone.dart:712)
#30 _CustomZone.bindUnaryCallback.<anonymous closure> (dart:async/zone.dart:738)
这是我的pubspec.yaml：
name: webatara
description: Web-based Confabulous client
dependencies:
barback: any
browser: any
angular: 1.1.0
web_components: any
msgpack:
git:
url: git://github.com/danellis/dart-msgpack.git
ref: master
dev_dependencies:
template_cache_transformer: any
transformers:
- template_cache_transformer:
entry_point: webatara|templates/app.html
- angular:
html_files:
- lib/templates/app.html
- lib/templates/input.html
- lib/templates/roster.html
- lib/templates/space.html
- lib/templates/space_list.html
- lib/templates/alerts.html
- lib/templates/rostermenu.html
- $dart2js:
commandLineOptions: [--show-package-warnings]
environment:
MIRRORS: 'false'