How to create a new channel with stream_chat_flutter 9.x?

[mauriziopinotti]

With stream_chat_flutter 8.x I used to create channels following the example app:

// in initState()
_channel = StreamChat.of(context).client.channel('messaging');

// then after the user selects the members for the new channel
  _channel = chatState.client.channel('messaging', extraData: {
    'members': [
      ..._selectedUsers.map((e) => e.id),
      chatState.currentUser!.id,
    ],
    'team': myteam,
  });

However, this no longer works with 9.x, I get

StreamChatNetworkError(code: 4, message: GetOrCreateChannel failed with error: "When using member based IDs specify at least 2 members", statusCode: 400, data: ErrorResponse(code: 4, message: GetOrCreateChannel failed with error: "When using member based IDs specify at least 2 members", statusCode: 400,

The example app does not have a create feature, how should channels be created in 9.x?

[szechyjs]

I too am having the issue. For me it is happening on the load of the new chat page, before I even call the api to create a new channel. It looks like the root is coming from loading an empty channel?

The create channel code is essentially copied directly from https://github.com/GetStream/flutter-samples/blob/develop/packages/stream_chat_v1/lib/pages/new_chat_screen.dart perhaps updating that to the latest version will solve this issue.

[ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: StreamChatNetworkError(code: 4, message: GetOrCreateChannel failed with error: "When using member based IDs specify at least 2 members", statusCode: 400, data: ErrorResponse(code: 4, message: GetOrCreateChannel failed with error: "When using member based IDs specify at least 2 members", statusCode: 400, moreInfo: https://getstream.io/chat/docs/api_errors_response))
#0      StreamHttpClient.post (package:stream_chat/src/core/http/stream_http_client.dart:150:7)
<asynchronous suspension>
#1      ChannelApi.queryChannel (package:stream_chat/src/core/api/channel_api.dart:35:22)
<asynchronous suspension>
#2      Channel.query (package:stream_chat/src/client/channel.dart:1662:24)
<asynchronous suspension>