Unity OnMessage Handler Error

HANUGAMES

OnMessage Code below Down

	void OnMessage (object sender, MessageEventArgs e)
	{
		Debug.Log("OnAddMessages | " +  "|"+ChatUtils.ValueToString(e.message));
		var message = (IndexedDictionary<string, object>) e.message;
		Debug.Log(e.message);

	}

and I send

room.Send("111");

but after I get response

InvalidCastException: Specified cast is not valid.
ColyseusClient.OnMessage (System.Object sender, Colyseus.MessageEventArgs e) (at Assets/PluginsColesus/ColyseusClient.cs:99)
Colyseus.Room.ParseMessage (System.Byte[] recv) (at Assets/PluginsColesus/Colyseus/Room.cs:195)
Colyseus.Room.Recv () (at Assets/PluginsColesus/Colyseus/Room.cs:83)
Colyseus.Client.Recv () (at Assets/PluginsColesus/Colyseus/Client.cs:89)
ColyseusClient+<Start>d__7.MoveNext () (at Assets/PluginsColesus/ColyseusClient.cs:58)
UnityEngine.SetupCoroutine.InvokeMoveNext (System.Collections.IEnumerator enumerator, System.IntPtr returnValueAddress) (at C:/buildslave/unity/build/Runtime/Export/Coroutines.cs:17)

Why dont i Get sending data "111".
Plese check this
My Unity 2017.3.1f
Colyseus Latest project .