[HELP] MissingPluginException(No implementation found for method listen on channel sy_flutter_qiniu_storage_event)

[laobei]

求助~~~

═══════ Exception caught by services library ══════════════════════════════════ MissingPluginException(No implementation found for method listen on channel sy_flutter_qiniu_storage_event) ════════════════════════════════════════════════════════════════════════════════ flutter: 1 [VERBOSE-2:ui_dart_state.cc(166)] Unhandled Exception: MissingPluginException(No implementation found for method upload on channel sy_flutter_qiniu_storage) #0 MethodChannel._invokeMethod package:flutter/…/services/platform_channel.dart:157 #1 MethodChannel.invokeMethod package:flutter/…/services/platform_channel.dart:332 #2 SyFlutterQiniuStorage.upload (package:sy_flutter_qiniu_storage/sy_flutter_qiniu_storage.dart:27:30) #3 PublishPageState._onUpload package:TLCommunity/…/tab/publish_page.dart:429 #4 _rootRunUnary (dart:async/zone.dart:1198:47) #5 _CustomZone.runUnary (dart:async/zone.dart:1100:19) #6 _FutureListener.handleValue (dart:async/future_impl.dart:143:18) #7 Future._propagateToListeners.handleValueCallback (dart:async/future_impl.dart:696:45) #8 Future._propagateToListeners (dart:async/future_impl.dart:725:32) #9 Future._completeWithValue (dart:async/future_impl.dart:529:5) #10 _AsyncA<…>