MissingPluginException(No implementation found for method listen on channel pusherStream)

[canaan5]

════════ Exception caught by services library ══════════════════════════════════════════════════════ The following MissingPluginException was thrown while activating platform stream on channel pusherStream: MissingPluginException(No implementation found for method listen on channel pusherStream)

When the exception was thrown, this was the stack: #0 MethodChannel.invokeMethod (package:flutter/src/services/platform_channel.dart:319:7) #1 EventChannel.receiveBroadcastStream. (package:flutter/src/services/platform_channel.dart:517:29) #3 EventChannel.receiveBroadcastStream. (package:flutter/src/services/platform_channel.dart:503:64) #8 Pusher.init (package:pusher_websocket_flutter/pusher.dart:29:44) ... ════════════════════════════════════════════════════════════════════════════════════════════════════