Unhandled exception logged when adding a new project

[neilweber]

Steps to reproduce:
Open side panel
Expand Projects sublist
Click "Add Project" list entry
Create a new project

The console log displays:
E/flutter (26554): [ERROR:flutter/shell/common/shell.cc(184)] Dart Error: Unhandled exception:
E/flutter (26554): Bad state: Cannot add new events after calling close
E/flutter (26554): #0 _BroadcastStreamController.add (dart:async/broadcast_stream_controller.dart:253:24)
E/flutter (26554): #1 _StreamSinkWrapper.add (dart:async/stream_controller.dart:858:13)
E/flutter (26554): #2 ProjectBloc._loadProjects. (package:flutter_app/pages/projects/project_bloc.dart:34:31)
E/flutter (26554): #3 _RootZone.runUnary (dart:async/zone.dart:1379:54)
E/flutter (26554): #4 _FutureListener.handleValue (dart:async/future_impl.dart:129:18)
E/flutter (26554): #5 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:642:45)
E/flutter (26554): #6 Future._propagateToListeners (dart:async/future_impl.dart:671:32)
E/flutter (26554): #7 Future._complete (dart:async/future_impl.dart:476:7)
E/flutter (26554): #8 _SyncCompleter.complete (dart:async/future_impl.dart:51:12)
E/flutter (26554): #9 _AsyncAwaitCompleter.complete (dart:async/runtime/libasync_patch.dart:28:18)
E/flutter (26554): #10 _completeOnAsyncReturn (dart:async/runtime/libasync_patch.dart:295:13)
E/flutter (26554): #11 ProjectDB.getProjects (package:flutter_app/pages/projects/project_db.dart)
E/flutter (26554):
E/flutter (26554): #12 ProjectBloc._loadProjects (package:flutter_app/pages/projects/project_bloc.dart:33:16)
E/flutter (26554): #13 ProjectBloc.refresh (package:flutter_app/pages/projects/project_bloc.dart:50:5)
E/flutter (26554): #14 ProjectExpansionTileWidget.buildProjects. (package:flutter_app/pages/projects/project_widget.dart:61:21)
E/flutter (26554):
E/flutter (26554): #15 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:507:14)

I'm studying this project to learn more about Flutter and using the BLoC pattern. Looking at the onTap() handler (which is somehow causing this exception), it's more complicated than I expected. Can you add some comments about why it's creating a second ProjectBloc object and why it's calling projectBloc.refresh(). IMHO, the point of Flutter and the BLoC pattern was to avoid things like refresh().

[burhanrashid52]

Fixed in master