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════════ Exception caught by widgets library ═══════════════════════════════════
The following _TypeError was thrown building WeatherListScreen(dirty, dependencies: [ForecastBlocProvider], state: _WeatherListScreenState#fd8a6):
type '_BroadcastStream' is not a subtype of type 'Stream'

The relevant error-causing widget was
WeatherListScreen
package:bloc_example/main.dart:22
When the exception was thrown, this was the stack
#0 ForecastBloc.forecastStream
package:bloc_example/forecast_bloc.dart:15
#1 _WeatherListScreenState.build
package:bloc_example/main.dart:56
#2 StatefulElement.build
package:flutter/…/widgets/framework.dart:4870
#3 ComponentElement.performRebuild
package:flutter/…/widgets/framework.dart:4754
#4 StatefulElement.performRebuild
package:flutter/…/widgets/framework.dart:4928
#5 Element.rebuild
package:flutter/…/widgets/framework.dart:4477
#6 ComponentElement._firstBuild
package:flutter/…/widgets/framework.dart:4735
#7 StatefulElement._firstBuild
package:flutter/…/widgets/framework.dart:4919
#8 ComponentElement.mount
package:flutter/…/widgets/framework.dart:4729
... Normal element mounting (177 frames)
#185 Element.inflateWidget
package:flutter/…/widgets/framework.dart:3790
#186 MultiChildRenderObjectElement.inflateWidget
package:flutter/…/widgets/framework.dart:6422
#187 MultiChildRenderObjectElement.mount
package:flutter/…/widgets/framework.dart:6433
... Normal element mounting (377 frames)
#564 Element.inflateWidget
package:flutter/…/widgets/framework.dart:3790
#565 Element.updateChild
package:flutter/…/widgets/framework.dart:3540
#566 RenderObjectToWidgetElement._rebuild
package:flutter/…/widgets/binding.dart:1198
#567 RenderObjectToWidgetElement.mount
package:flutter/…/widgets/binding.dart:1167
#568 RenderObjectToWidgetAdapter.attachToRenderTree.
package:flutter/…/widgets/binding.dart:1112
#569 BuildOwner.buildScope
package:flutter/…/widgets/framework.dart:2600
#570 RenderObjectToWidgetAdapter.attachToRenderTree
package:flutter/…/widgets/binding.dart:1111
#571 WidgetsBinding.attachRootWidget
package:flutter/…/widgets/binding.dart:944
#572 WidgetsBinding.scheduleAttachRootWidget.
package:flutter/…/widgets/binding.dart:924
(elided 11 frames from class _RawReceivePortImpl, class _Timer, dart:async, and dart:async-patch)