Unhandled Exception: MissingPluginException(No implementation found for method joinChannel on channel agora_rtc_engine) E/flutter (14086): #0 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:156:7)

[alenpmla]

Issue

I use agora_rtc_engine: ^3.3.3.

Issue

W/System.err(14086): java.lang.reflect.InvocationTargetException
W/System.err(14086): 	at java.lang.reflect.Method.invoke(Native Method)
W/System.err(14086): 	at io.agora.agora_rtc_engine.AgoraRtcEnginePlugin.onMethodCall(AgoraRtcEnginePlugin.kt:113)
W/System.err(14086): 	at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:233)
W/System.err(14086): 	at io.flutter.embedding.engine.dart.DartMessenger.handleMessageFromDart(DartMessenger.java:85)
W/System.err(14086): 	at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(FlutterJNI.java:818)
W/System.err(14086): 	at android.os.MessageQueue.nativePollOnce(Native Method)
W/System.err(14086): 	at android.os.MessageQueue.next(MessageQueue.java:335)
W/System.err(14086): 	at android.os.Looper.loop(Looper.java:206)
W/System.err(14086): 	at android.app.ActivityThread.main(ActivityThread.java:8506)
W/System.err(14086): 	at java.lang.reflect.Method.invoke(Native Method)
W/System.err(14086): 	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602)
W/System.err(14086): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1139)
W/System.err(14086): Caused by: kotlin.TypeCastException: null cannot be cast to non-null type kotlin.Number
W/System.err(14086): 	at io.agora.rtc.base.RtcEngineManager.joinChannel(RtcEngine.kt:398)
W/System.err(14086): 	... 12 more
E/flutter (14086): [ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: MissingPluginException(No implementation found for method joinChannel on channel agora_rtc_engine)
E/flutter (14086): #0      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:156:7)

To Reproduce

1. Initialize sdk
2. Call joinchannel() method

Flutter Doctor

[✓] Flutter (Channel stable, 2.2.2, on macOS 11.4 20F71 darwin-x64, locale en-IN)
• Flutter version 2.2.2 at /Users/alen/Documents/flutter
• Framework revision d79295af24 (2 weeks ago), 2021-06-11 08:56:01 -0700
• Engine revision 91c9fc8fe0
• Dart version 2.13.3

[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
• Android SDK at /Users/alen/Library/Android/sdk
• Platform android-30, build-tools 30.0.2
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)
• All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 12.5, Build version 12E262
• CocoaPods version 1.10.1

[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 4.1)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b3-6222593)

[✓] Connected device (2 available)
• SM F415F (mobile) • RZ8NB08AWVP • android-arm64 • Android 11 (API 30)
• Chrome (web) • chrome • web-javascript • Google Chrome 91.0.4472.114

[alenpmla]

Tried all solutions which are mentioned in this ticket #253, none of them worked.

[LichKing-2234]

Caused by: kotlin.TypeCastException: null cannot be cast to non-null type kotlin.Number

your uid parameter may be null.

[waqadArshad]

Caused by: kotlin.TypeCastException: null cannot be cast to non-null type kotlin.Number

your uid parameter may be null.

@LichKing-2234 here is my code and the uid is not null.

final AgoraClient client = AgoraClient(
    agoraConnectionData: AgoraConnectionData(
      appId: "40216abc119348c4a6236c11ab1a0c3e",
      tokenUrl: "https://nikah----match.herokuapp.com",
      channelName: channelName,
      uid: 0,
    ),
    enabledPermission: [
      Permission.camera,
      Permission.microphone,
    ],
  );

This error comes for the first one or two tries after opening the app everytime I open the app and try to initiate a call and on the third or maybe 4th try. it works. what could be the possible reason?

[littleGnAl]

Hello @waqadArshad , is possible to share the implementation of the joinChannel?

[waqadArshad]

Hello @waqadArshad , is possible to share the implementation of the joinChannel?

@littleGnAl Hi, thanks for getting back to me. the thing is that the version of the plugin I was using was a bit old and this error went away after updating the plugin version. But I am still getting another error if u can help me with that, please have a look here: PlatformException(-17, request to join channel is rejected, null, null) Or when I end the call PlatformException(-7, , null, null)

[github-actions]

Without additional information, we are unfortunately not sure how to resolve this issue. We are therefore reluctantly going to close this bug for now. If you find this problem please file a new issue with the same description, what happens, logs and the output. All system setups can be slightly different so it's always better to open new issues and reference the related ones. Thanks for your contribution.

[github-actions]

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please raise a new issue.