调试Chromecast Receiver App（此设备不支持平台API）

Question

我有一个接收器应用程序。根据端口9222上的调试面板。控制台很快就会吐出这些线

[  0.162s] [goog.net.WebSocket] An error occurred: undefined
[  0.172s] [cast.receiver.ChannelOverWebSocket] Dispatch ERROR event to ws://localhost:8008/system/control
[  0.177s] [cast.receiver.Channel] Dispatch ERROR event to ws://localhost:8008/system/control
[  0.182s] [cast.receiver.Platform] Platform channel has an error: ws://localhost:8008/system/control

然后在一系列这些错误之后（在重试循环中）：

[  8.335s] [cast.receiver.Platform] This device doesn't support the platform API.

请建议我哪里出错。