lesson 30

[Akemicho90]

(index):82 Loading app from service worker.
js_primitives.dart:30 ══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
js_primitives.dart:30 The following TypeErrorImpl was thrown building Home(dirty, dependencies: [_ModalScopeStatus],
js_primitives.dart:30 state: _HomeState#a2be0):
js_primitives.dart:30 Expected a value of type 'Map<dynamic, dynamic>', but got one of type 'Null'
js_primitives.dart:30
js_primitives.dart:30 The relevant error-causing widget was:
js_primitives.dart:30 Home Home:file:///C:/Users/hp/Desktop/app/world_time/lib/main.dart:13:34
js_primitives.dart:30
js_primitives.dart:30 When the exception was thrown, this was the stack:
js_primitives.dart:30 C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/internal/js_dev_runtime/private/ddc_runtime/errors.dart 251:49 throw
js_primitives.dart:30 C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/errors.dart 84:3 castError
js_primitives.dart:30 C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/operations.dart 452:10 cast
js_primitives.dart:30 C:/b/s/w/ir/cache/builder/src/out/host_debug/dart-sdk/lib/_internal/js_dev_runtime/private/ddc_runtime/classes.dart 635:14 as_C
js_primitives.dart:30 packages/world_time/pages/home.dart 24:56 build
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4870:27 build
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4754:15 performRebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4928:11 performRebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4477:5 rebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4735:5 [_firstBuild]
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4919:11 [_firstBuild]
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4729:5 mount
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3790:13 inflateWidget
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3540:18 updateChild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 6284:14 mount
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3790:13 inflateWidget
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3540:18 updateChild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4780:16 performRebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4477:5 rebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4735:5 [_firstBuild]
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4729:5 mount
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3790:13 inflateWidget
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3540:18 updateChild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 6284:14 mount
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3790:13 inflateWidget
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3540:18 updateChild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 6284:14 mount
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3790:13 inflateWidget
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3540:18 updateChild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4780:16 performRebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4928:11 performRebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4477:5 rebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4735:5 [_firstBuild]
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4919:11 [_firstBuild]
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4729:5 mount
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3790:13 inflateWidget
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3540:18 updateChild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 6284:14 mount
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3790:13 inflateWidget
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3540:18 updateChild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 6284:14 mount
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3790:13 inflateWidget
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3540:18 updateChild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4780:16 performRebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4928:11 performRebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4477:5 rebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4735:5 [_firstBuild]
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4919:11 [_firstBuild]
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4729:5 mount
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3790:13 inflateWidget
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3540:18 updateChild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4780:16 performRebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4477:5 rebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4735:5 [_firstBuild]
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4729:5 mount
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3790:13 inflateWidget
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3540:18 updateChild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4780:16 performRebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4928:11 performRebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4477:5 rebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4735:5 [_firstBuild]
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4919:11 [_firstBuild]
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4729:5 mount
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3790:13 inflateWidget
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3540:18 updateChild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 6284:14 mount
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3790:13 inflateWidget
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3540:18 updateChild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 6284:14 mount
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3790:13 inflateWidget
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3540:18 updateChild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4780:16 performRebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4477:5 rebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4735:5 [_firstBuild]
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4729:5 mount
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3790:13 inflateWidget
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3540:18 updateChild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 6284:14 mount
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3790:13 inflateWidget
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3540:18 updateChild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4780:16 performRebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4928:11 performRebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4477:5 rebuild
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4735:5 [_firstBuild]
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4919:11 [_firstBuild]
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 4729:5 mount
js_primitives.dart:30 packages/flutter/src/widgets/framework.dart 3790:13 inflateWidget
browser_client.dart:72 GET http://worldtimeapi.org/api/timezone/Europe/Berlin net::ERR_EMPTY_RESPONSE
send @ browser_client.dart:72
(anonymous) @ async_patch.dart:45
runUnary @ zone.dart:1685
handleValue @ future_impl.dart:159
handleValueCallback @ future_impl.dart:766
_propagateToListeners @ future_impl.dart:795
[_completeWithValue] @ future_impl.dart:601
(anonymous) @ future_impl.dart:639
_microtaskLoop @ schedule_microtask.dart:40
_startMicrotaskLoop @ schedule_microtask.dart:49
(anonymous) @ async_patch.dart:166
Promise.then (async)
_scheduleImmediateWithPromise @ async_patch.dart:164
_scheduleImmediate @ async_patch.dart:136
_scheduleAsyncCallback @ schedule_microtask.dart:69
_rootScheduleMicrotask @ zone.dart:1493
scheduleMicrotask @ zone.dart:1705
[_addListener] @ future_impl.dart:464
[_thenAwait] @ future_impl.dart:368
onAwait @ async_patch.dart:40
runBody @ async_patch.dart:111
_async @ async_patch.dart:123
[_waitInTheLine] @ window.dart:141
handleNavigationMessage @ window.dart:156
runBody @ async_patch.dart:84
_async @ async_patch.dart:123
handleNavigationMessage @ window.dart:155
[_sendPlatformMessage] @ platform_dispatcher.dart:482
sendPlatformMessage @ platform_dispatcher.dart:265
send @ binding.dart:354
_invokeMethod @ platform_channel.dart:167
runBody @ async_patch.dart:84
_async @ async_patch.dart:123
[_invokeMethod] @ platform_channel.dart:165
[_invokeMethod] @ platform_channel.dart:446
invokeMethod @ platform_channel.dart:445
runBody @ async_patch.dart:84
_async @ async_patch.dart:123
invokeMethod @ platform_channel.dart:444
selectSingleEntryHistory @ system_navigator.dart:49
initState @ navigator.dart:3245
[_firstBuild] @ framework.dart:4893
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
performRebuild @ framework.dart:4928
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
[_firstBuild] @ framework.dart:4919
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
performRebuild @ framework.dart:4928
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
[_firstBuild] @ framework.dart:4919
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
mount @ framework.dart:6284
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
mount @ framework.dart:6284
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
performRebuild @ framework.dart:4928
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
[_firstBuild] @ framework.dart:4919
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
performRebuild @ framework.dart:4928
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
[_firstBuild] @ framework.dart:4919
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
performRebuild @ framework.dart:4928
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
[_firstBuild] @ framework.dart:4919
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
performRebuild @ framework.dart:4928
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
[_firstBuild] @ framework.dart:4919
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
mount @ framework.dart:4729
inflateWidget @ framework.dart:3790
updateChild @ framework.dart:3540
performRebuild @ framework.dart:4780
performRebuild @ framework.dart:4928
rebuild @ framework.dart:4477
[_firstBuild] @ framework.dart:4735
[_firstBuild] @ framework.dart:4919
setTimeout (async)
_isolate_helper.TimerImpl.new @ isolate_helper.dart:55
_createTimer @ async_patch.dart:186
createTimer @ zone.dart:1709
new @ timer.dart:51
run @ timer.dart:110
scheduleAttachRootWidget @ binding.dart:923
(anonymous) @ binding.dart:1036
runApp @ binding.dart:1037
main$ @ main.dart:9
main @ web_entrypoint.dart:16
(anonymous) @ async_patch.dart:45
runUnary @ zone.dart:1685
handleValue @ future_impl.dart:159
handleValueCallback @ future_impl.dart:766
_propagateToListeners @ future_impl.dart:795
[_completeWithValue] @ future_impl.dart:601
(anonymous) @ future.dart:479
runUnary @ zone.dart:1685
handleValue @ future_impl.dart:159
handleValueCallback @ future_impl.dart:766
_propagateToListeners @ future_impl.dart:795
[_completeWithValue] @ future_impl.dart:601
(anonymous) @ future_impl.dart:639
_microtaskLoop @ schedule_microtask.dart:40
_startMicrotaskLoop @ schedule_microtask.dart:49
(anonymous) @ async_patch.dart:166
Promise.then (async)
_scheduleImmediateWithPromise @ async_patch.dart:164
_scheduleImmediate @ async_patch.dart:136
_scheduleAsyncCallback @ schedule_microtask.dart:69
_rootScheduleMicrotask @ zone.dart:1493
scheduleMicrotask @ zone.dart:1705
[_asyncCompleteWithValue] @ future_impl.dart:638
[_asyncComplete] @ future_impl.dart:633
complete @ future_impl.dart:45
(anonymous) @ js_util.dart:259
Promise.then (async)
promiseToFuture @ js_util.dart:271
[dartx.arrayBuffer] @ html_dart2js.dart:1682
[_getArrayBuffer] @ fonts.dart:176
runUnary @ zone.dart:1685
handleValue @ future_impl.dart:159
handleValueCallback @ future_impl.dart:766
_propagateToListeners @ future_impl.dart:795
[_completeWithValue] @ future_impl.dart:601
(anonymous) @ future_impl.dart:639
_microtaskLoop @ schedule_microtask.dart:40
_startMicrotaskLoop @ schedule_microtask.dart:49
(anonymous) @ async_patch.dart:166
Promise.then (async)
_scheduleImmediateWithPromise @ async_patch.dart:164
_scheduleImmediate @ async_patch.dart:136
_scheduleAsyncCallback @ schedule_microtask.dart:69
_rootScheduleMicrotask @ zone.dart:1493
scheduleMicrotask @ zone.dart:1705
[_asyncCompleteWithValue] @ future_impl.dart:638
[_asyncComplete] @ future_impl.dart:633
complete @ future_impl.dart:45
(anonymous) @ js_util.dart:259
Promise.then (async)
promiseToFuture @ js_util.dart:271
[dartx.fetch] @ html_dart2js.dart:32948
httpFetch @ util.dart:562
runBody @ async_patch.dart:84
_async @ async_patch.dart:123
httpFetch @ util.dart:561
_registerFont @ fonts.dart:148
runBody @ async_patch.dart:84
_async @ async_patch.dart:123
[_registerFont] @ fonts.dart:145
registerFonts @ fonts.dart:127
(anonymous) @ async_patch.dart:45
runUnary @ zone.dart:1685
handleValue @ future_impl.dart:159
handleValueCallback @ future_impl.dart:766
_propagateToListeners @ future_impl.dart:795
[_completeWithValue] @ future_impl.dart:601
(anonymous) @ future_impl.dart:639
_microtaskLoop @ schedule_microtask.dart:40
_startMicrotaskLoop @ schedule_microtask.dart:49
(anonymous) @ async_patch.dart:166
Promise.then (async)
_scheduleImmediateWithPromise @ async_patch.dart:164
_scheduleImmediate @ async_patch.dart:136
_scheduleAsyncCallback @ schedule_microtask.dart:69
_rootScheduleMicrotask @ zone.dart:1493
scheduleMicrotask @ zone.dart:1705
[_asyncCompleteWithValue] @ future_impl.dart:638
[_asyncComplete] @ future_impl.dart:633
complete @ future_impl.dart:45
(anonymous) @ html_dart2js.dart:18226
_checkAndCall @ operations.dart:334
dcall @ operations.dart:339
(anonymous) @ html_dart2js.dart:37277
load (async)
[_addEventListener] @ html_dart2js.dart:15853
[dartx.addEventListener] @ html_dart2js.dart:15841
[_tryResume] @ html_dart2js.dart:37331
_EventStreamSubscription.new @ html_dart2js.dart:37278
listen @ html_dart2js.dart:37178
request @ html_dart2js.dart:18213
load @ assets.dart:58
runBody @ async_patch.dart:84
_async @ async_patch.dart:123
load @ assets.dart:54
registerFonts @ fonts.dart:95
runBody @ async_patch.dart:84
_async @ async_patch.dart:123
registerFonts @ fonts.dart:91
webOnlySetAssetManager @ initialization.dart:68
runBody @ async_patch.dart:84
_async @ async_patch.dart:123
webOnlySetAssetManager @ initialization.dart:49
_initializePlatform @ initialization.dart:33
(anonymous) @ async_patch.dart:45
runUnary @ zone.dart:1685
handleValue @ future_impl.dart:159
handleValueCallback @ future_impl.dart:766
_propagateToListeners @ future_impl.dart:795
[_completeWithValue] @ future_impl.dart:601
(anonymous) @ future_impl.dart:639
_microtaskLoop @ schedule_microtask.dart:40
_startMicrotaskLoop @ schedule_microtask.dart:49
(anonymous) @ async_patch.dart:166
Promise.then (async)
_scheduleImmediateWithPromise @ async_patch.dart:164
_scheduleImmediate @ async_patch.dart:136
_scheduleAsyncCallback @ schedule_microtask.dart:69
_rootScheduleMicrotask @ zone.dart:1493
scheduleMicrotask @ zone.dart:1705
[_asyncCompleteWithValue] @ future_impl.dart:638
[_asyncComplete] @ future_impl.dart:633
complete @ future_impl.dart:45
(anonymous) @ initialization.dart:57
_checkAndCall @ operations.dart:334
dcall @ operations.dart:339
ret @ js_patch.dart:413
Promise.then (async)
(anonymous) @ initialization.dart:54
runUnary @ zone.dart:1685
handleValue @ future_impl.dart:159
handleValueCallback @ future_impl.dart:766
_propagateToListeners @ future_impl.dart:795
[_completeWithValue] @ future_impl.dart:601
(anonymous) @ future_impl.dart:639
_microtaskLoop @ schedule_microtask.dart:40
_startMicrotaskLoop @ schedule_microtask.dart:49
(anonymous) @ async_patch.dart:166
Promise.then (async)
_scheduleImmediateWithPromise @ async_patch.dart:164
_scheduleImmediate @ async_patch.dart:136
_scheduleAsyncCallback @ schedule_microtask.dart:69
_rootScheduleMicrotask @ zone.dart:1493
scheduleMicrotask @ zone.dart:1705
[_asyncCompleteWithValue] @ future_impl.dart:638
[_asyncComplete] @ future_impl.dart:633
_Future.immediate @ future_impl.dart:282
value @ future.dart:334
(anonymous) @ internal.dart:142
run @ zone.dart:1679
get nullFuture @ internal.dart:142
desc.get @ operations.dart:839
cancel @ html_dart2js.dart:37288
(anonymous) @ initialization.dart:86
_checkAndCall @ operations.dart:334
dcall @ operations.dart:339
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