login 报错,AgoraRtmClient._eventListener 报错,github 上没有回复,这边有人看一下吗

login 时这一行报错:

E/flutter ( 9587): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: NoSuchMethodError: The method 'call' was called on null.
E/flutter ( 9587): Receiver: null
E/flutter ( 9587): Tried calling: call(2, 1)
E/flutter ( 9587): #0      Object.noSuchMethod  (dart:core-patch/object_patch.dart:53:5)
E/flutter ( 9587): #1      AgoraRtmClient._eventListener 
package:agora_rtm/src/agora_rtm_client.dart:113
E/flutter ( 9587): #2      _rootRunUnary  (dart:async/zone.dart:1134:38)
E/flutter ( 9587): #3      _CustomZone.runUnary  (dart:async/zone.dart:1031:19)
E/flutter ( 9587): #4      _CustomZone.runUnaryGuarded  (dart:async/zone.dart:933:7)
E/flutter ( 9587): #5      _BufferingStreamSubscription._sendData  (dart:async/stream_impl.dart:338:11)
E/flutter ( 9587): #6      _DelayedData.perform  (dart:async/stream_impl.dart:593:14)
E/flutter ( 9587): #7      _StreamImplEvents.handleNext  (dart:async/stream_impl.dart:709:11)
E/flutter ( 9587): #8      _PendingEvents.schedule.<anonymous closure>  (dart:async/stream_impl.dart:669:7)
E/flutter ( 9587): #9      _rootRun  (dart:async/zone.dart:1122:38)
E/flutter ( 9587): #10     _CustomZone.run  (dart:async/zone.dart:1023:19)
E/flutter ( 9587): #11     _CustomZone.runGuarded  (dart:async/zone.dart:925:7)
E/flutter ( 9587): #12     _CustomZone.bindCallbackGuarded.<anonymous closure>  (dart:async/zone.dart:965:23)
E/flutter ( 9587): #13     _rootRun  (dart:async/zone.dart:1126:13)
E/flutter ( 9587): #14     _CustomZone.run  (dart:async/zone.dart:1023:19)
E/flutter ( 9587): #15     _CustomZone.runGuarded  (dart:async/zone.dart:925:7)
E/flutter ( 9587): #16     _CustomZone.bindCallbackGuarded.<anonymous closure>  (dart:async/zone.dart:965:23)
E/flutter ( 9587): #17     _microtaskLoop  (dart:async/schedule_microtask.dart:43:21)
E/flutter ( 9587): #18     _startMicrotaskLoop  (dart:async/schedule_microtask.dart:52:5)
E/flutter ( 9587):

收到,我让负责该 demo 的工程师跟进一下,后续会在 GitHub 上回复你哈。