Bad state: Stream has already been listened to.

[ZianFahrudy]

E/flutter ( 2950): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: Bad state: Stream has already been listened to.
E/flutter ( 2950): #0 _StreamController._subscribe (dart:async/stream_controller.dart:676:7)
E/flutter ( 2950): #1 _ControllerStream._createSubscription (dart:async/stream_controller.dart:827:19)
E/flutter ( 2950): #2 _StreamImpl.listen (dart:async/stream_impl.dart:471:9)
E/flutter ( 2950): #3 new _AddStreamState (dart:async/stream_controller.dart:892:34)
E/flutter ( 2950): #4 new _StreamControllerAddStreamState (dart:async/stream_controller.dart:942:9)
E/flutter ( 2950): #5 _StreamController.addStream (dart:async/stream_controller.dart:576:9)
E/flutter ( 2950): #6 _AsyncStarStreamController.addStream (dart:async-patch/async_patch.dart:99:39)
E/flutter ( 2950): #7 QiscusSDK.onMessageRead (package:qiscus_chat_sdk/src/qiscus.dart)
qiscus.dart:1
E/flutter ( 2950):
E/flutter ( 2950):
E/flutter ( 2950): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: Bad state: Stream has already been listened to.
E/flutter ( 2950): #0 _StreamController._subscribe (dart:async/stream_controller.dart:676:7)
E/flutter ( 2950): #1 _ControllerStream._createSubscription (dart:async/stream_controller.dart:827:19)
E/flutter ( 2950): #2 _StreamImpl.listen (dart:async/stream_impl.dart:471:9)
E/flutter ( 2950): #3 new _AddStreamState (dart:async/stream_controller.dart:892:34)
E/flutter ( 2950): #4 new _StreamControllerAddStreamState (dart:async/stream_controller.dart:942:9)
E/flutter ( 2950): #5 _StreamController.addStream (dart:async/stream_controller.dart:576:9)
E/flutter ( 2950): #6 _AsyncStarStreamController.addStream (dart:async-patch/async_patch.dart:99:39)
E/flutter ( 2950): #7 QiscusSDK.onMessageDelivered (package:qiscus_chat_sdk/src/qiscus.dart)
qiscus.dart:1
E/flutter ( 2950):
E/flutter ( 2950):
2
I/flutter ( 2950): on do back!
I/flutter ( 2950): initiate chat!
[log] set user! Fita
E/flutter ( 2950): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: Bad state: Stream has already been listened to.
E/flutter ( 2950): #0 _StreamController._subscribe (dart:async/stream_controller.dart:676:7)
E/flutter ( 2950): #1 _ControllerStream._createSubscription (dart:async/stream_controller.dart:827:19)
E/flutter ( 2950): #2 _StreamImpl.listen (dart:async/stream_impl.dart:471:9)
E/flutter ( 2950): #3 new _AddStreamState (dart:async/stream_controller.dart:892:34)
E/flutter ( 2950): #4 new _StreamControllerAddStreamState (dart:async/stream_controller.dart:942:9)
E/flutter ( 2950): #5 _StreamController.addStream (dart:async/stream_controller.dart:576:9)
E/flutter ( 2950): #6 _AsyncStarStreamController.addStream (dart:async-patch/async_patch.dart:99:39)
E/flutter ( 2950): #7 QiscusSDK.onMessageRead (package:qiscus_chat_sdk/src/qiscus.dart)
qiscus.dart:1
E/flutter ( 2950):
E/flutter ( 2950):

[ZianFahrudy]

Kasus nya ketika login -> chatroomscreen -> onback -> login -> chatroomscreen.
Pesan terakhir terkirim tapi tidak ter-load jika onback dan login kembali.
Thanks, qiscus team.